content: I used to read PDF files everyday. But after the last 2 update it starts hurting the eyes. The page starts jumping up or down when it hides the menu bar. Now the bookmark is very difficult. Now we have to lot of steps to remove and add bookmark. While reading books using PDF easily accessible bookmark is a must. Hope you will make and immediate update to bring back bookmark icon on top bar and not to move the page up or down while hiding or unhiding the top bar. An update to an must be to make life easier. Instead last update make it more frustrating