This issue is happening because a timer is set by the browser when pressing the open PDF button. By the time people have chosen a pattern, the timer has lapsed and a security warning prevents returning to full screen without pressing a button again. There's no way for me to fix this issue. I can only make it more obvious that the full screen button needs to be pressed again. I'm going to close this as wontfix because there's already a popup with the fullscreen button shown after the pdf is opened.
I thought this fix was working because every time I tested, I just clicked on a random pdf quickly so the timer wasn't lapsing for me!
This issue is happening because a timer is set by the browser when pressing the open PDF button. By the time people have chosen a pattern, the timer has lapsed and a security warning prevents returning to full screen without pressing a button again. There's no way for me to fix this issue. I can only make it more obvious that the full screen button needs to be pressed again. I'm going to close this as wontfix because there's already a popup with the fullscreen button shown after the pdf is opened.
I thought this fix was working because every time I tested, I just clicked on a random pdf quickly so the timer wasn't lapsing for me!