I am on Manjaro 20.0.3.
I have a dual monitor setup. My problem is that whenever I fullscreen Minecraft versions 1.8 and below, my primary monitor (which is on the left) only shows the left half of the game, the right monitor still just shows the desktop. (It's as if the game is trying to display across both monitors but fails and only displays half of itself on the primary monitor).
If I try to minimize the game window or take a screenshot, my computer freezes up completely and I have to plug it out and back in again.
My GPU is a nvidia 1050ti. I have the latest drivers installed.
Also I am sure that this is purely a dual monitor issue because if I plug out the other monitor, fullscreen works fine. Fullscreen also works fine on any version above 1.8.