Comment by mrob

I don't think that's a serious problem. There are three possibilities I can think of:

1. You're editing text outside of Emacs. Your cursor remains where it was, so you insert a single character and the document scrolls back to the cursor. You can then delete that character.

2. You're editing text in Emacs. You like to pretend it's still the 1970s and off-screen cursors are some pie-in-the-sky fantasy. You solve the problem with some unspecified ELISP wizardry, which as a self-respecting Emacs user you are surely capable of.

3. You're reading a read-only document. You activate your full-text search, which every good document viewer has, and start typing the last sentence you read while it's still fresh in your memory.