When I have a document open and I want to open another, I hit the home icon in the top left and it pulls up the file organizer. AFAIK there is no way to leave this file menu to re-enter the editing screen without opening a document. As in, remembering which files were already open to “open them again” or just open any file and then close its tab once I am back in the editing screen. There should be a button directly where the home icon is that leaves the file menu and returns to editing (if there are in fact files already opened!). Just checking what documents I have uploaded is clunky and tedious to deal with if I’m actively using the app to take notes.