What happened:

I enabled fullscreen from the videosettings while in-game, then suddenly the game crashed.

Error log:

I found out this is a duplicate of MC-128117. The original thread is "resolved" (it was in 1.12.2) but the bug remains.

I found a second duplicate MC-5520 (wich has 67 duplicates, HOW IS THIS POSSIBLE?!), it's "resolved" as well (it was in 1.11.2) but the bug remains

A mod added "libglfw.dylib" on the end of my report. What does that mean?

More testing and details on how to reproduce in MC-142076

Couldn't find this issue while searching but a moderator seems to have found it and linked mine as a duplicate (thank you).

Does this still happen in the latest snapshot?

@[Helper] Matthew
The issue is resolved! Thanks!