Jerboa uses Jetpack Compose toolkit, instead of traditional Views approach. It is not mature yet and the source of many of these problems you are experiencing. It works well with Gboard but not so much with other keyboards.
- Weird behaviour on text removal on OASP keyboards or derivatives https://issuetracker.google.com/issues/294102838 https://issuetracker.google.com/issues/221636606
- Or this one where when you are typing your text starts getting behind your keyboard https://issuetracker.google.com/issues/266094055
- Or this which causes stuttering behaviour in some scrollable contents https://issuetracker.google.com/issues/250632404
Can you post a picture of what you mean? the sidebar expands for each new account. It should fit theoretically a unlimited amount