I have been Having the same issue where, while you are playing the game, the taskbar activates and pops into view sometimes pausing the game, as it is bedrock edition, the game doesn't actually pause at all and if you are in the middle of a battle or you are running from creepers or just having a good time playing the game you love, it can be extremely frustrating and even game breaking. This issue has caused me to stop playing the game altogether, even though I can only play with friends using bedrock edition because it is the only version any of them own. There must be an easy fix for this it just needs to be done. This does not occur in Java edition at all. As Максим has stated going to the Task manager and ending the explorer.exe task in order to completely eliminate the taskbar from the desktop doesn't solve the issue because the area where the taskbar should be, there is a black bar, and though you cannot move your cursor onto it, the black bar is ever present, and it is just more of a hassle to end the task, and then have to run the task again when your done just so that you can enjoy a game and still have an broken experience is not an option. Imagine being a younger player... doing such a thing would deem to be near impossible. I have yet to be convinced that ending the explorer.exe task is even a good thing for your computer. Now, I don't pretend to know what going on at Mojang's end of things but I have heard they have been going through a bit of a hard time, Maybe its Pressure from Microsoft, anything could be happening, but I don't think its acceptable to leave the game in this state, especially for two months since the bug was reported. Please fix this issue if not for the community, do it for the game.
I bid all the Mojang team good luck and good wishes.
Here It says the issue was resolved but I'm not able to use my skin anymore for the exact same "limited usage" as others.