i have a few suggestions for future updates. Some of those were in the old versions.
can the viewer show the file name and the total number of pages.
iin the old version it was very easy to switch between the pdf document (viewer) and the file list. I think i could swipe in the viewer to see the file list. This seems now rather awkward to do. And when I go back to Local file list, I don't see the pdf document I was reading a few seconds ago. I suppose you have Cloud Local, but I suppose if the open doc is from Local. you can show the Local file list at a swipe, centred around the currently open file.
To see the total number of pages, you can place your finger over the small page number indicator on the right side of the screen in the Continuous Page mode and drag (not tap) it up and down.
A larger page number indicator appears at the center of the screen, while you are dragging up and down the small one.
Here's the screenshot from Acrobat Reader for iOS. Acrobat Reader for Android has the similar user interface.
For your other suggestions, would you submit a feature request?
Thank you for the feedback!