Problem Sky Factory 3 crashes in fullscreen

[carreau]

I just downloaded Sky Factory 3, launched it for the first time and after setting the game to fullscreen in the video settings it crashed. Since the option is saved it will repeatedly crash after having been relaunched. I can play in windowed by editing the options.txt but will crash every time if set to fullscreen.

Modpack Version is 3.0.21
I'm on a Macbook with macOS 20.14.6 (Mojave) and using an external monitor.

This is the error message in the log:

2020-12-31 23:11:11.987 java[2569:266976] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'NSWindow drag regions should only be invalidated on the Main Thread!'
*** First throw call stack:
(
0 CoreFoundation 0x00007fff3f8f19ad __exceptionPreprocess + 256
1 libobjc.A.dylib 0x00007fff69feca17 objc_exception_throw + 48
2 CoreFoundation 0x00007fff3f90b50d -[NSException raise] + 9
3 AppKit 0x00007fff3ceb05ca -[NSWindow(NSWindow_Theme) _postWindowNeedsToResetDragMarginsUnlessPostingDisabled] + 317
4 AppKit 0x00007fff3ceb96ad -[NSWindow _cacheAndSetPropertiesForCollectionBehavior:] + 448
5 AppKit 0x00007fff3ceb8d8f -[NSWindow _effectiveCollectionBehavior] + 422
6 ??? 0x000000011929f6c7 0x0 + 4717147847
)
libc++abi.dylib: terminating with uncaught exception of type NSException