I have already reported this bug but it has not been fixed and it has to be done as it is really dangerous
error starts when joining split screen on nintendo switch second player screen starts flickering
Steps to see the error
1. enter your world
2. connect a controller 2
3. join
4. Contemplate the mistake
This bug starts to get dangerous if you use split screen in portable mode because here if you go to the menu while player 2 joins the flickering screen will get stuck in the menu
Steps to see it
1. play minecraft in portable mode
2. when joining your world connect another player
3. when the screen is flashing, exit to the console menu
4. Contemplate the mistake