Marcel Taeumel uploaded a new version of Morphic to project The Trunk:
http://source.squeak.org/trunk/Morphic-mt.1591.mcz

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

Name: Morphic-mt.1591
Author: mt
Time: 21 November 2019, 9:01:23.586593 am
UUID: f1318c24-447a-cd4f-b557-b2f8ac23d7a6
Ancestors: Morphic-mt.1590

Fixes the same bug about splitter positioning. :-) The issue was that the splitter's position did not match its internal state (leftOrTop or rightOrBottom).

=============== Diff against Morphic-mt.1590 ===============

Item was changed:
  ----- Method: BorderedMorph>>addPaneHSplitterAtBottomOfRow: (in category 'resize handling') -----
  addPaneHSplitterAtBottomOfRow: someMorphs
  
  	| targetY minX maxX splitter |
  	targetY := someMorphs first layoutFrame bottomFraction.
  
  	minX := (someMorphs detectMin: [:each | each layoutFrame leftFraction]) layoutFrame leftFraction.
  	maxX := (someMorphs detectMax: [:each | each layoutFrame rightFraction]) layoutFrame rightFraction.
  
  	splitter := ProportionalSplitterMorph new beSplitsTopAndBottom; yourself.
  	splitter layoutFrame: (LayoutFrame
  		fractions: (minX @ targetY corner: maxX @ targetY)
+ 		offsets: ((someMorphs first layoutFrame leftOffset ifNil: [0]) @ 0 
+ 			corner: (someMorphs first layoutFrame rightOffset ifNil: [0]) @ AbstractResizerMorph gripThickness)).
- 		offsets: (((someMorphs first layoutFrame leftOffset ifNil: [0]) @ 0 
- 			corner: (someMorphs first layoutFrame rightOffset ifNil: [0]) @ AbstractResizerMorph gripThickness) 
- 			translateBy: 0 @ (someMorphs first layoutFrame bottomOffset ifNil: [0]))).
  
  	self addMorphBack: (splitter position: self position).!

Item was changed:
  ----- Method: BorderedMorph>>addPaneVSplitterAtRightOfColumn: (in category 'resize handling') -----
  addPaneVSplitterAtRightOfColumn: someMorphs
  
  	| targetX minY maxY splitter |
  	targetX := someMorphs first layoutFrame rightFraction.
+ 	
  	minY := (someMorphs detectMin: [:each | each layoutFrame topFraction]) layoutFrame topFraction.
  	maxY := (someMorphs detectMax: [:each | each layoutFrame bottomFraction]) layoutFrame bottomFraction.
  	
+ 	splitter := ProportionalSplitterMorph new beSplitsLeftAndRight; yourself.
- 	splitter := ProportionalSplitterMorph new.
  	splitter layoutFrame: (LayoutFrame
  		fractions: (targetX @ minY corner: targetX @ maxY)
+ 		offsets: (0 @ (someMorphs first layoutFrame topOffset ifNil: [0])
+ 			corner: (AbstractResizerMorph gripThickness@ (someMorphs first layoutFrame bottomOffset ifNil: [0])))).
- 		offsets: ((0 @ (someMorphs first layoutFrame topOffset ifNil: [0]) corner: (AbstractResizerMorph gripThickness@ (someMorphs first layoutFrame bottomOffset ifNil: [0]))) translateBy: (someMorphs first layoutFrame rightOffset ifNil: [0]) @ 0)).
  
  	self addMorphBack: (splitter position: self position).!