[Cuis-dev] [bug] Artifacts when moving a SystemWindow

[Nicolás Papagna Maldonado]

Hi folks,

I just found out about this weird behavior:
Open a workspace and evaluate:

This makes the LayoutMorph grow as expected:

layout := LayoutMorph newColumn.
layout openInWorld.
10 timesRepeat: [ layout addMorph: LabelMorph new ].


This opens a SystemWindow and its layout content appear to be clipped to
the size of the window, but moving the window
shows the label morphs rendered outside the window, allowing you to "paint"
using them (see attached screenshot):

window := SystemWindow new.
window openInWorld.
10 timesRepeat: [ window addMorph: LabelMorph new ].
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