I often deal with large-page PDF's I need to zoom into in order to read. I'm also constantly switching between apps, back and forth with Acrobat to copy/paste, look things up, etc.

And every time on my iPad that I switch back to Acrobat, it resets the zoom so it's full-width again. I lose my place and have to find it and re-zoom again to continue reading.

Since that happens all day long, it drives me a little bit crazy. Adobe, if you're listening, just find the line of code that resets the zoom to default every time the app is switched to, and delete it! There is zero UX justification for this "feature".

(Note: I'm viewing PDF's in "continuous" mode, not single-page.)