When I hold down the escape key the menu pops up for a second then disappears  and opens and closes my inventory rapidly. I'm not sure what has caused this issue but I've tried reinstalling minecraft and still nothing has happened. When I try to exit my inventory with escape it also just reopens my inventory.

This link is to the video this happening. It's to large to post it on here and I don't know how to cut the videos length.

https://imgur.com/a/aUN0UTo