Remove aria-haspopup from dropdowns (#33624)

`aria-haspopup="true"` is really intended to signal that an ARIA `menu` will be opened on activation. as a result, some assistive technologies will announce controls with `aria-haspopup="true"` as a menu or menu item (e.g. JAWS and NVDA).
In addition, `aria-haspopup` seems to trigger a bug in Edge/Narrator where the `aria-expanded` state is not correctly announced at the moment when `aria-haspopup` is present.
This now makes the dropdown button more like a generic disclosure widget control - see also https://www.w3.org/TR/wai-aria-practices-1.2/examples/disclosure/disclosure-navigation.html01

js/tests/unit/dropdown.js

@@ -752,7 +752,7 @@ $(function () {
     var done = assert.async()
     var html = '<nav class="navbar navbar-expand-md navbar-light bg-light">' +
         '<div class="dropdown">' +
-        '  <a class="nav-link dropdown-toggle" href="#" id="dropdown" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>' +
+        '  <a class="nav-link dropdown-toggle" href="#" id="dropdown" data-toggle="dropdown" aria-expanded="false">Dropdown</a>' +
         '  <div class="dropdown-menu" aria-labelledby="dropdown">' +
         '    <a class="dropdown-item" href="#">Action</a>' +
         '    <a class="dropdown-item" href="#">Another action</a>' +

js/tests/visual/dropdown.html

@@ -28,7 +28,7 @@
               <a class="nav-link" href="#">Link</a>
             </li>
             <li class="nav-item dropdown">
-              <a class="nav-link dropdown-toggle" href="#" id="dropdown" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+              <a class="nav-link dropdown-toggle" href="#" id="dropdown" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
               <div class="dropdown-menu" aria-labelledby="dropdown">
                 <a class="dropdown-item" href="#">Action</a>
                 <a class="dropdown-item" href="#">Another action</a>
@@ -50,7 +50,7 @@
           <a class="nav-link" href="#">Link</a>
         </li>
         <li class="nav-item dropdown">
-          <a class="nav-link dropdown-toggle" href="#" id="dropdown2" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown2" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
           <div class="dropdown-menu" aria-labelledby="dropdown2">
             <a class="dropdown-item" href="#">Action</a>
             <a class="dropdown-item" href="#">Another action</a>
@@ -63,7 +63,7 @@
         <div class="col-sm-12 mt-4">
           <div class="btn-group dropup">
             <button type="button" class="btn btn-secondary">Dropup split</button>
-            <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+            <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
               <span class="sr-only">Dropup split</span>
             </button>
             <div class="dropdown-menu">
@@ -74,7 +74,7 @@
           </div>
 
           <div class="btn-group dropup">
-            <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropup</button>
+            <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-expanded="false">Dropup</button>
             <div class="dropdown-menu">
               <a class="dropdown-item" href="#">Action</a>
               <a class="dropdown-item" href="#">Another action</a>
@@ -83,7 +83,7 @@
           </div>
 
           <div class="btn-group">
-            <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+            <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
               This dropdown's menu is right-aligned
             </button>
             <div class="dropdown-menu dropdown-menu-right">
@@ -97,7 +97,7 @@
         <div class="col-sm-12 mt-4">
           <div class="btn-group dropup" role="group">
             <a href="#" class="btn btn-secondary">Dropup split align right</a>
-            <button type="button" id="dropdown-page-subheader-button-3" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+            <button type="button" id="dropdown-page-subheader-button-3" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-expanded="false">
               <span class="sr-only">Product actions</span>
             </button>
             <div class="dropdown-menu dropdown-menu-right">
@@ -107,7 +107,7 @@
             </div>
           </div>
           <div class="btn-group dropup">
-            <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropup align right</button>
+            <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-expanded="false">Dropup align right</button>
             <div class="dropdown-menu dropdown-menu-right">
               <button class="dropdown-item" type="button">Action</button>
               <button class="dropdown-item" type="button">Another action</button>
@@ -119,7 +119,7 @@
         <div class="col-sm-12 mt-4">
           <div class="btn-group dropright" role="group">
             <a href="#" class="btn btn-secondary">Dropright split</a>
-            <button type="button" id="dropdown-page-subheader-button-4" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+            <button type="button" id="dropdown-page-subheader-button-4" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-expanded="false">
               <span class="sr-only">Product actions</span>
             </button>
             <div class="dropdown-menu">
@@ -129,7 +129,7 @@
             </div>
           </div>
           <div class="btn-group dropright">
-            <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuRight" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+            <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuRight" data-toggle="dropdown" aria-expanded="false">
               Dropright
             </button>
             <div class="dropdown-menu" aria-labelledby="dropdownMenuRight">
@@ -141,7 +141,7 @@
           <!-- dropleft -->
           <div class="btn-group dropleft" role="group">
             <a href="#" class="btn btn-secondary">Dropleft split</a>
-            <button type="button" id="dropdown-page-subheader-button-5" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+            <button type="button" id="dropdown-page-subheader-button-5" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-expanded="false">
               <span class="sr-only">Product actions</span>
             </button>
             <div class="dropdown-menu">
@@ -151,7 +151,7 @@
             </div>
           </div>
           <div class="btn-group dropleft">
-            <button class="btn btn-secondary dropdown-toggle" type="button" id="dropleftMenu" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+            <button class="btn btn-secondary dropdown-toggle" type="button" id="dropleftMenu" data-toggle="dropdown" aria-expanded="false">
               Dropleft
             </button>
             <div class="dropdown-menu" aria-labelledby="dropleftMenu">
@@ -177,7 +177,7 @@
         <div class="col-sm-3 mt-4">
           <div class="btn-group dropdown">
             <button type="button" class="btn btn-secondary">Dropdown reference</button>
-            <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" data-reference="parent">
+            <button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-expanded="false" data-reference="parent">
               <span class="sr-only">Dropdown split</span>
             </button>
             <div class="dropdown-menu">
@@ -189,7 +189,7 @@
         </div>
         <div class="col-sm-3 mt-4">
           <div class="dropdown">
-            <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" data-display="static" aria-haspopup="true" aria-expanded="false">
+            <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" data-display="static" aria-expanded="false">
               Dropdown menu without Popper.js
             </button>
             <div class="dropdown-menu" aria-labelledby="dropdownMenuButton">

js/tests/visual/scrollspy.html

@@ -24,7 +24,7 @@
             <a class="nav-link" href="#mdo">@mdo</a>
           </li>
           <li class="nav-item dropdown">
-            <a class="nav-link dropdown-toggle" href="#" id="dropdown" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+            <a class="nav-link dropdown-toggle" href="#" id="dropdown" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
             <div class="dropdown-menu" aria-labelledby="dropdown">
               <a class="dropdown-item" href="#one">One</a>
               <a class="dropdown-item" href="#two">Two</a>

js/tests/visual/tab.html

@@ -164,7 +164,7 @@
         <a class="nav-link nav-item active" data-toggle="tab" href="#home5">Home</a>
         <a class="nav-link nav-item" data-toggle="tab" href="#profile5">Profile</a>
         <div class="nav-item dropdown">
-          <a class="nav-link dropdown-toggle" href="#" id="dropdown5" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown5" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
           <div class="dropdown-menu" aria-labelledby="dropdown5">
             <a class="dropdown-item" data-toggle="tab" href="#fat5">@fat</a>
             <a class="dropdown-item" data-toggle="tab" href="#mdo5">@mdo</a>

site/content/docs/4.6/components/button-group.md

@@ -123,7 +123,7 @@ Place a `.btn-group` within another `.btn-group` when you want dropdown menus mi
   <button type="button" class="btn btn-secondary">2</button>
 
   <div class="btn-group" role="group">
-    <button id="btnGroupDrop1" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    <button id="btnGroupDrop1" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
       Dropdown
     </button>
     <div class="dropdown-menu" aria-labelledby="btnGroupDrop1">
@@ -155,7 +155,7 @@ Make a set of buttons appear vertically stacked rather than horizontally. **Spli
     <button type="button" class="btn btn-secondary">Button</button>
     <button type="button" class="btn btn-secondary">Button</button>
     <div class="btn-group" role="group">
-      <button id="btnGroupVerticalDrop1" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <button id="btnGroupVerticalDrop1" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
         Dropdown
       </button>
       <div class="dropdown-menu" aria-labelledby="btnGroupVerticalDrop1">
@@ -166,7 +166,7 @@ Make a set of buttons appear vertically stacked rather than horizontally. **Spli
     <button type="button" class="btn btn-secondary">Button</button>
     <button type="button" class="btn btn-secondary">Button</button>
     <div class="btn-group" role="group">
-      <button id="btnGroupVerticalDrop2" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <button id="btnGroupVerticalDrop2" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
         Dropdown
       </button>
       <div class="dropdown-menu" aria-labelledby="btnGroupVerticalDrop2">
@@ -175,7 +175,7 @@ Make a set of buttons appear vertically stacked rather than horizontally. **Spli
       </div>
     </div>
     <div class="btn-group" role="group">
-      <button id="btnGroupVerticalDrop3" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <button id="btnGroupVerticalDrop3" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
         Dropdown
       </button>
       <div class="dropdown-menu" aria-labelledby="btnGroupVerticalDrop3">
@@ -184,7 +184,7 @@ Make a set of buttons appear vertically stacked rather than horizontally. **Spli
       </div>
     </div>
     <div class="btn-group" role="group">
-      <button id="btnGroupVerticalDrop4" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <button id="btnGroupVerticalDrop4" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
         Dropdown
       </button>
       <div class="dropdown-menu" aria-labelledby="btnGroupVerticalDrop4">

site/content/docs/4.6/components/input-group.md

@@ -192,7 +192,7 @@ Multiple add-ons are supported and can be mixed with checkbox and radio input ve
 {{< example >}}
 <div class="input-group mb-3">
   <div class="input-group-prepend">
-    <button class="btn btn-outline-secondary dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</button>
+    <button class="btn btn-outline-secondary dropdown-toggle" type="button" data-toggle="dropdown" aria-expanded="false">Dropdown</button>
     <div class="dropdown-menu">
       <a class="dropdown-item" href="#">Action</a>
       <a class="dropdown-item" href="#">Another action</a>
@@ -207,7 +207,7 @@ Multiple add-ons are supported and can be mixed with checkbox and radio input ve
 <div class="input-group">
   <input type="text" class="form-control" aria-label="Text input with dropdown button">
   <div class="input-group-append">
-    <button class="btn btn-outline-secondary dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</button>
+    <button class="btn btn-outline-secondary dropdown-toggle" type="button" data-toggle="dropdown" aria-expanded="false">Dropdown</button>
     <div class="dropdown-menu">
       <a class="dropdown-item" href="#">Action</a>
       <a class="dropdown-item" href="#">Another action</a>
@@ -225,7 +225,7 @@ Multiple add-ons are supported and can be mixed with checkbox and radio input ve
 <div class="input-group mb-3">
   <div class="input-group-prepend">
     <button type="button" class="btn btn-outline-secondary">Action</button>
-    <button type="button" class="btn btn-outline-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    <button type="button" class="btn btn-outline-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-expanded="false">
       <span class="sr-only">Toggle Dropdown</span>
     </button>
     <div class="dropdown-menu">
@@ -243,7 +243,7 @@ Multiple add-ons are supported and can be mixed with checkbox and radio input ve
   <input type="text" class="form-control" aria-label="Text input with segmented dropdown button">
   <div class="input-group-append">
     <button type="button" class="btn btn-outline-secondary">Action</button>
-    <button type="button" class="btn btn-outline-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+    <button type="button" class="btn btn-outline-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-expanded="false">
       <span class="sr-only">Toggle Dropdown</span>
     </button>
     <div class="dropdown-menu">

site/content/docs/4.6/components/navbar.md

@@ -50,7 +50,7 @@ Here's an example of all the sub-components included in a responsive light-theme
         <a class="nav-link" href="#">Link</a>
       </li>
       <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-expanded="false">
           Dropdown
         </a>
         <div class="dropdown-menu" aria-labelledby="navbarDropdown">
@@ -181,7 +181,7 @@ You can also use dropdowns in your navbar. Dropdown menus require a wrapping ele
         <a class="nav-link" href="#">Pricing</a>
       </li>
       <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdownMenuLink" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdownMenuLink" role="button" data-toggle="dropdown" aria-expanded="false">
           Dropdown link
         </a>
         <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">

site/content/docs/4.6/components/navs.md

@@ -257,7 +257,7 @@ Add dropdown menus with a little extra HTML and the [dropdowns JavaScript plugin
     <a class="nav-link active" href="#">Active</a>
   </li>
   <li class="nav-item dropdown">
-    <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+    <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-expanded="false">Dropdown</a>
     <div class="dropdown-menu">
       <a class="dropdown-item" href="#">Action</a>
       <a class="dropdown-item" href="#">Another action</a>
@@ -283,7 +283,7 @@ Add dropdown menus with a little extra HTML and the [dropdowns JavaScript plugin
     <a class="nav-link active" href="#">Active</a>
   </li>
   <li class="nav-item dropdown">
-    <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+    <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-expanded="false">Dropdown</a>
     <div class="dropdown-menu">
       <a class="dropdown-item" href="#">Action</a>
       <a class="dropdown-item" href="#">Another action</a>

site/content/docs/4.6/components/scrollspy.md

@@ -33,7 +33,7 @@ Scroll the area below the navbar and watch the active class change. The dropdown
         <a class="nav-link" href="#mdo">@mdo</a>
       </li>
       <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+        <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-expanded="false">Dropdown</a>
         <div class="dropdown-menu">
           <a class="dropdown-item" href="#one">one</a>
           <a class="dropdown-item" href="#two">two</a>
@@ -69,7 +69,7 @@ Scroll the area below the navbar and watch the active class change. The dropdown
       <a class="nav-link" href="#mdo">@mdo</a>
     </li>
     <li class="nav-item dropdown">
-      <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+      <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-expanded="false">Dropdown</a>
       <div class="dropdown-menu">
         <a class="dropdown-item" href="#one">one</a>
         <a class="dropdown-item" href="#two">two</a>

site/content/docs/4.6/examples/jumbotron/index.html

@@ -23,7 +23,7 @@ extra_css:
         <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
       </li>
       <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+        <a class="nav-link dropdown-toggle" href="#" id="dropdown01" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
         <div class="dropdown-menu" aria-labelledby="dropdown01">
           <a class="dropdown-item" href="#">Action</a>
           <a class="dropdown-item" href="#">Another action</a>

site/content/docs/4.6/examples/navbar-bottom/index.html

@@ -27,7 +27,7 @@ title: Bottom navbar example
         <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
       </li>
       <li class="nav-item dropup">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown10" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropup</a>
+        <a class="nav-link dropdown-toggle" href="#" id="dropdown10" data-toggle="dropdown" aria-expanded="false">Dropup</a>
         <div class="dropdown-menu" aria-labelledby="dropdown10">
           <a class="dropdown-item" href="#">Action</a>
           <a class="dropdown-item" href="#">Another action</a>

site/content/docs/4.6/examples/navbars/index.html

@@ -23,7 +23,7 @@ extra_css:
         <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
       </li>
       <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+        <a class="nav-link dropdown-toggle" href="#" id="dropdown01" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
         <div class="dropdown-menu" aria-labelledby="dropdown01">
           <a class="dropdown-item" href="#">Action</a>
           <a class="dropdown-item" href="#">Another action</a>
@@ -76,7 +76,7 @@ extra_css:
         <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
       </li>
       <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown03" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+        <a class="nav-link dropdown-toggle" href="#" id="dropdown03" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
         <div class="dropdown-menu" aria-labelledby="dropdown03">
           <a class="dropdown-item" href="#">Action</a>
           <a class="dropdown-item" href="#">Another action</a>
@@ -108,7 +108,7 @@ extra_css:
         <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
       </li>
       <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown04" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+        <a class="nav-link dropdown-toggle" href="#" id="dropdown04" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
         <div class="dropdown-menu" aria-labelledby="dropdown04">
           <a class="dropdown-item" href="#">Action</a>
           <a class="dropdown-item" href="#">Another action</a>
@@ -140,7 +140,7 @@ extra_css:
         <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
       </li>
       <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown05" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+        <a class="nav-link dropdown-toggle" href="#" id="dropdown05" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
         <div class="dropdown-menu" aria-labelledby="dropdown05">
           <a class="dropdown-item" href="#">Action</a>
           <a class="dropdown-item" href="#">Another action</a>
@@ -172,7 +172,7 @@ extra_css:
         <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
       </li>
       <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown06" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+        <a class="nav-link dropdown-toggle" href="#" id="dropdown06" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
         <div class="dropdown-menu" aria-labelledby="dropdown06">
           <a class="dropdown-item" href="#">Action</a>
           <a class="dropdown-item" href="#">Another action</a>
@@ -205,7 +205,7 @@ extra_css:
           <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
         </li>
         <li class="nav-item dropdown">
-          <a class="nav-link dropdown-toggle" href="#" id="dropdown07" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown07" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
           <div class="dropdown-menu" aria-labelledby="dropdown07">
             <a class="dropdown-item" href="#">Action</a>
             <a class="dropdown-item" href="#">Another action</a>
@@ -275,7 +275,7 @@ extra_css:
         <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
       </li>
       <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown08" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+        <a class="nav-link dropdown-toggle" href="#" id="dropdown08" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
         <div class="dropdown-menu" aria-labelledby="dropdown08">
           <a class="dropdown-item" href="#">Action</a>
           <a class="dropdown-item" href="#">Another action</a>
@@ -305,7 +305,7 @@ extra_css:
           <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
         </li>
         <li class="nav-item dropdown">
-          <a class="nav-link dropdown-toggle" href="#" id="dropdown09" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown09" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
           <div class="dropdown-menu" aria-labelledby="dropdown09">
             <a class="dropdown-item" href="#">Action</a>
             <a class="dropdown-item" href="#">Another action</a>
@@ -336,7 +336,7 @@ extra_css:
           <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
         </li>
         <li class="nav-item dropdown">
-          <a class="nav-link dropdown-toggle" href="#" id="dropdown10" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown10" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
           <div class="dropdown-menu" aria-labelledby="dropdown10">
             <a class="dropdown-item" href="#">Action</a>
             <a class="dropdown-item" href="#">Another action</a>

site/content/docs/4.6/examples/offcanvas/index.html

@@ -29,7 +29,7 @@ body_class: "bg-light"
         <a class="nav-link" href="#">Switch account</a>
       </li>
       <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Settings</a>
+        <a class="nav-link dropdown-toggle" href="#" id="dropdown01" data-toggle="dropdown" aria-expanded="false">Settings</a>
         <div class="dropdown-menu" aria-labelledby="dropdown01">
           <a class="dropdown-item" href="#">Action</a>
           <a class="dropdown-item" href="#">Another action</a>

site/content/docs/4.6/examples/starter-template/index.html

@@ -23,7 +23,7 @@ extra_css:
         <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
       </li>
       <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+        <a class="nav-link dropdown-toggle" href="#" id="dropdown01" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
         <div class="dropdown-menu" aria-labelledby="dropdown01">
           <a class="dropdown-item" href="#">Action</a>
           <a class="dropdown-item" href="#">Another action</a>

site/layouts/partials/docs-navbar.html

@@ -31,7 +31,7 @@
 
   <ul class="navbar-nav ml-md-auto">
     <li class="nav-item dropdown">
-      <a class="nav-item nav-link dropdown-toggle mr-md-2" href="#" id="bd-versions" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+      <a class="nav-item nav-link dropdown-toggle mr-md-2" href="#" id="bd-versions" data-toggle="dropdown" aria-expanded="false">
         v{{ .Site.Params.docs_version }}
       </a>
       <div class="dropdown-menu dropdown-menu-md-right" aria-labelledby="bd-versions">