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The UML modules have "border buildup" problems in a lot of places. I worked very hard in the rest of NetBeans to fix all such cases - the typical pattern is adding something to a JScrollPane that supplies its own border, like a JTextComponent - you get doubled borders. This causes the UML components to look sloppily designed beside the rest of the IDE's components. Screenshots for some cases attached - it would be worth reviewing all uses of JScrollPane to make sure this is handled correctly. Typically the solution is simply to remove the borders from the scroll pane in question. Code: theScrollPane.setBorder (BorderFactory.createEmptyBorder()); theScrollPane.setViewportBorder (BorderFactory.createEmptyBorder()); be sure to set the viewport border as well as the outer border - different look and feels will favor different borders. Do *not* use null, use an EmptyBorder - if you use null, GTK look and feel will treat that as an invitation to supply its own border, making things ugly again.
Created attachment 32348 [details] screenshot 1
Created attachment 32349 [details] image/png
Created attachment 32350 [details] image/png
In screenshot #1, RE no longer uses popup dialog for progress. NB Output window is used. In screenshot #2, drawing area has been redesigned. In screenshot #3, dialog has been redesigned.
verified again in NB 6.5 UML build 20080821.