With a morph containing complex submorphs with TableLayout and 
#spaceFill resizing attribute, I have found this strange behavior.

When the Morph is open in the world, the layout is not correct (see 
screenshot BadLayout.png). If I resize this morph, the layout is 
recomputed correctly (see screenshot GoodLayout.png).

Methods layoutChanged or changed does not help

When the morph is displayed, sending twice a message (myMorph extent: 
myMorph extent + 1) update correctly the layout. The trick does not work 
when the morph is not displayed

I tested this with 3.9

Hilaire Fernandes
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