Problem with new patch

Once the game is minimized, I am not able to open the game again, when I click on the icon on the task bar, the game opens, sets the resolution(I have a 4k panel but I play on 1440p), and shows the game for half a sec and then goes back to the desktop. I got banned due to this bug. If I click on the icon again, the same repeats until I close the game completely and start it again from battle.net launcher.

Any fix for this issue ?

This usually means you’re out of RAM or pagefile space on the drive. It can also happen if another app has higher level permissions to display instead of the game, like an overlay.

How to fix this error ?

Close some background apps, make sure the drives have 15–20% free space.