Taskbar Won't Disappear

[Android Central Question]

Usually when I go into YouTube (the app) and full-screen it on my phone, the taskbar disappears so it doesn't cut off anything from the video. Recently, it's been refusing to disappear. Doesn't matter which video I choose or how long I wait to put it into full-screen, it never disappears. I've tried uninstalling and re-installing the app, closing out of it, going back into it and updating it to the latest version, but nothing has worked.

 

[B. Diddy]

Welcome to Android Central! Which phone? What happens if you use a pinch-to-zoom gesture (in this case, pinch your fingers, then spread them out to expand the video to fullscreen)?