The app stays open and the files are still accessed but the viewing window is closed every time I switch away from acrobat to another full-screen window such as chrome. When I reopen the Acrobat window it opens as a minimized window overtop of a full-screen window. instead of over top of the desktop view. This started happening after Acrobat froze and then failed to quit reporting it would after phantom "updates were finished installing for Acrobat Pro DC" which I never downloaded or installed. Acrobat and the computer both had to be forcequit but acrobat still produced the same error after restart so I had to uninstall and reinstall acrobat dc. Since that reinstall the window has started closeing everytime I swipe to an alternate screen.