Marcel Taeumel uploaded a new version of Graphics to project The Trunk:
http://source.squeak.org/trunk/Graphics-mt.514.mcz

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

Name: Graphics-mt.514
Author: mt
Time: 27 April 2022, 6:31:33.012285 pm
UUID: 9dde8efe-1988-4859-899b-371696b6deec
Ancestors: Graphics-mt.513

We must ensure that the GC does not collect our displayBits before we have set up new ones and communicated those to the VM.

=============== Diff against Graphics-mt.513 ===============

Item was changed:
  ----- Method: DisplayScreen>>restore (in category 'other') -----
  restore
  
+ 	| priorBits |
+ 	priorBits := bits. "Must avoid to be GC'ed!!"
+ 		self setExtent: self class actualScreenSize depth: self nativeDepth.
+ 		self beDisplay.
+ 	priorBits := nil. "Documentation only."
- 	self setExtent: self class actualScreenSize depth: self nativeDepth.
- 	self beDisplay.
  	
  	Project current ifNotNil: [:p| p displaySizeChanged].!