I've had a problem with Minecraft for a few days, I always play minecraft in full screen mode and sometimes I did something briefly on my second screen, that always worked well, but for a few days I always minimize the game (i.e. Always eenn I click on the other monitor) black screen for 2-3 seconds and nothing works, then everything works perfectly again. Do you have a solution for that?
Get the Borderless Gaming program. This allows you to play Minecraft in full screen mode and to go to the other screen without any problems without having to minimize the game.