After upgrading from 3.0 to 3.1, the toolbars are messed up. For every deselected or unavailable command group, there is an empty toolbar section with separator. When switching from Java/JEE/Grails/Spring perspective to Debug, there are no debug toolbar icons (Step into ...) visible. After randomly dragging around the empty toolbar sections, they appear in a previously empty section. After switching back (to a perspective without debug commands) the section is empty again. but retains the size that it had with the buttons visible.
Here's a screenshot:
Same error happened in GGTS and STS.
This problem was already mentioned in
http://forum.springsource.org/showth...rsion&p=427127 but I'm afraid it goes unnoticed there as the poster asked a different question.