Christoph Thiede uploaded a new version of Morphic to project The Inbox:
http://source.squeak.org/inbox/Morphic-ct.1626.mcz

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

Name: Morphic-ct.1626
Author: ct
Time: 10 February 2020, 11:59:37.194089 am
UUID: 4909a268-ae09-b641-ae4c-a59a49cd99e5
Ancestors: Morphic-cmm.1618

Revise/fix #addMorphNearBack: implementation

Instead of deleting and re-adding aMorph, simply use #addMorphBack:. This also fixes the problem that backmostMorphs were sent #intoWorld: after minimizing a window, for example.

=============== Diff against Morphic-cmm.1618 ===============

Item was changed:
  ----- Method: Morph>>addMorphNearBack: (in category 'submorphs-add/remove') -----
  addMorphNearBack: aMorph 
+ 	
+ 	| backmostMorph |
+ 	backmostMorph := self submorphs atLast: 1 ifAbsent: [nil].
+ 	^ (backmostMorph notNil and: [backmostMorph mustBeBackmost])
+ 		ifTrue: [self addMorph: aMorph inFrontOf: backmostMorph]
+ 		ifFalse: [self addMorphBack: aMorph]!
- 	| bg |
- 	(submorphs notEmpty and: [submorphs last mustBeBackmost]) 
- 		ifTrue: 
- 			[bg := submorphs last.
- 			bg privateDelete].
- 	self addMorphBack: aMorph.
- 	bg ifNotNil: [self addMorphBack: bg]!