reopen this issue @DaFron
and i can confirm that problem is not with lwjgl version. this had happened when i tried modding, some libraries depended on xorg so i had to run an xwayland session. and it seems you are using again a library depending on xorg.
https://www.minecraft.net/en-us/article/minecraft-26-1-snapshot-8 reading here, Input Method Editors (IME) candidates will now be shown in-game (on supported platforms, currently Windows and macOS) above currently edited text field i assume this is what causes the problem
this has nothing to do with another launcher. either the glfw version is broken, or you used some old apis that depends on x. it was vanilla minecrfat not modded.
i can confirm with chicken pig sheep cow
and now they removed again in 26.1-8