Fullscreen mode broken in 1.12.2

[PrimePlatypus]

When I try to go into fullscreen mode in 1.12.2, instead of going into fullscreen mode normally it uses 1/4 of the screen and snaps to the bottom left corner, and the rest of the screen unused. I do have liteloader with no mods installed, but I can confirm that it also happens in vanilla. Works normally in 1.18.1. Screenshot attached below.

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[ViRb3]

Unfortunately this is a known bug. I recommend expanding the game window instead of playing fullscreen for now.

[ViRb3]

Could be related to #36

[ViRb3]

This has been fixed in https://github.com/MinecraftMachina/lwjgl/releases/tag/2.9.4-20150209-mmachina.2. Simply restart ManyMC and you will get the update.