Ok, I figured it out. cq:Panel did the trick.I used to have the following hierarchy:dialog + items (cq:Widget, xtype=tabpanel) + items + tab (cq:Widget, xtype=panel) + items + multitext (cq:Widget, xtype=multifield, hideLabel=true) + fieldConfigChanged to:dialog + items (cq:Widget, xtype=tabpanel) +...