When I put a video or an image gallery to full screen, the navigation buttons, clock, and status bar don't hide. They often appear as though they're going to hide, for a split second, but frustratingly bounce right back into view. On rare occasions, it seems to be random chance, the status bar, clock, and navigation buttons do hide, but I don't know how to get them to hide every time. I've already tried disabling picture in picture for the app but that has not helped. What are the reasons the buttons and clock would not hide in full screen? How would we go about fixing things?