Not exactly sure what update started this but it worked fine before. I use Firefox on s23 ultra and tab S8 ultra. Both are signed into and I've tried to reinstall the app but still doesn't fix the problem. If I go on YouTube or a website that has video, if I click on full screen the app closes down but keeps playing the video. If I open the app and hit full screen again it then works and fills the screen with the video. If I could go back to a month ago maybe since this is pretty new bug. I do have add-ons but even with a clean install and no add-ons it still does the same thing. Was referred here from the play store.