I have been using Minecraft on my iPad for a couple of months now and just recently got a Bluetooth mouse to use with it to make it easier for me to play, I have a Logitech M550 L Bluetooth mouse connected to my iPad Air 4th gen. When I first got it it worked fine then when I opened the pause menu it would disconnect from the game and I couldn’t use mouse anymore without completely restarting the game. Now when I start the game the mouse curser doesn’t go away and it try’s to use gestures when I am playing so it will try to drop down the notification menu or open the multitasking on the iPad. This causes the game to pause and it is constant. Because the mouse can’t move continuously I am left only being able to control my character in a small window without pausing the game and resetting where the mouse is, and if the curser goes to one of the edges of the screen might as well give up playing. In the attached video you can see the curser not actually hidden and some of the issues I encounter.
Duplicate of MCPE-164387