Marcel Taeumel uploaded a new version of Graphics to project The Trunk:
http://source.squeak.org/trunk/Graphics-mt.518.mcz

==================== Summary ====================

Name: Graphics-mt.518
Author: mt
Time: 1 June 2022, 12:42:42.383329 pm
UUID: 39ca7519-8370-4a49-8b83-1719a4bf7008
Ancestors: Graphics-mt.517

Fixes X11 issue with XResizeWindow directly followed by XGetWindowAttributes. I think that it makes sense to address this in the image unless somebody can propose a useful fix like "sync" or "wait a frame" in the VM. See platforms/unix/vm-display-X11/sqUnixX11.c.

=============== Diff against Graphics-mt.517 ===============

Item was changed:
  ----- Method: DisplayScreen class>>hostWindowExtent: (in category 'host window access') -----
  hostWindowExtent: aPoint
  	
+ 	[self
- 	^ [self
  		primitiveWindow: self hostWindowIndex
  		width: aPoint x
  		height: aPoint y]
  			on: Error "primitive failed such as in headless mode"
+ 			do: [:ex | "ignore" ].
+ 			
+ 	Smalltalk windowSystemName = 'X11'
+ 		ifTrue: [100 milliSeconds wait].
+ 		
+ 	^ self actualScreenSize!
- 			do: [:ex | Display extent]!