This is kind of fun. Are you the developer? When typing a note on a phone (Android), if the note gets long enough that the bottom is covered by the onscreen keyboard, there doesn't seem to be a way to scroll down to see what you're typing, so you just have to type blind with the text hidden by the keyboard.

EDIT: Actually now it works fine in Brave browser. Maybe it's only a problem in Reddit's internal browser? (using Relay Reddit app)