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Created attachment 115514 [details] Screenshot I opened the diff module in a dev build, created an action in the org.netbeans.modules.diff package, then deleted it again (Delete key on Projects tab entry). The Projects and Files tabs continued to show the package as modified, even though Diff and Status showed no changes (and 'hg st diff' produces no output). Curiously, in the Files tab there was a modification badge on "Diff", "src", and "diff", but not on "org", "netbeans", or "modules". Problem persists after closing and reopening project, but is corrected by an IDE restart.
I've seen it in svn-controlled projects, too. It started appearing after the rewrite in core versioning modules.
*** This bug has been marked as a duplicate of bug 207274 ***