Marcel Taeumel uploaded a new version of Morphic to project The Trunk: http://source.squeak.org/trunk/Morphic-mt.1642.mcz
==================== Summary ====================
Name: Morphic-mt.1642 Author: mt Time: 3 April 2020, 5:52:32.157206 pm UUID: 774f60b6-f208-a246-bbd8-f07c0d5d0fb4 Ancestors: Morphic-spfa.1641
Adds a missing reset of the potential drop row to avoid visual glitches. As you can see, the hover row and the potential-drop row are both related.
=============== Diff against Morphic-spfa.1641 ===============
Item was changed: ----- Method: PluggableListMorph>>mouseLeave: (in category 'event handling') ----- mouseLeave: event
super mouseLeave: event. self hoverRow: nil. + self resetPotentialDropRow.
Preferences mouseOverForKeyboardFocus ifTrue: [event hand releaseKeyboardFocus: self].!
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