The taskbar overlaying on top of games or web browsers. This bug has existed for a long time. This guide explains how to fix taskbar showing in fullscreen.
Right click your taskbar, Open task manager, restart explorer. If you can't find explorer just browse to C:- and it'll appear, right click explorer->restart.
I can temporarily fix it by going to Task Manager and restarting the Windows Explorer process. This will make my taskbar flash on and off and for a little ...
Make sure that the option – “Automatically hide the taskbar in desktop mode” in the Settings is enabled . Even after that, if the taskbar is not hiding in fullscreen, then it's probably because of some app that is providing notifications that do not all