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[nb 20070401, jdk1.6] I had a java source file with 2 changes. I removed the first one using the cross button. It was removed properly but Up and Down arrows in the diff view showed no further modification. The Refresh button did not help. So I scrolled down to the last modification and after clicking on the cross button the IDE froze.
Created attachment 40878 [details] thread dump
*** This issue has been marked as a duplicate of 99102 ***