This is a problem, when you rotate an android phone and view document in landscape mode in Acrobat Reader app:
In this orientation when you flick the finger to move down the document (to the next page and so on), its perfect - smooth transition and full screen with no obstructions to view your document.
However, when you flick the finger the other way to view previous pages, the screen always flickers a bit. Also, the large top bar apears and takes over a lot of the screen and prevents viewing of the document (the same as when you single tap on the screen). Its not large in portrait mode but is in landscape mode.
This top bar should be smaller in landscape mode and also should only come out when you single tap. Trying to view previous pages and having the view obstructed with this large bar in landscape is very annoying - it should the same as moving down the document and viewing next pages.