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NB Dev (200611281900), JDK 6.0 (b104) Steps to reproduce: - run IDE - create Java Librabry - create some file (expand Source Folder) node in Projects view - invoke properties on Project node - add library and push OK -> Source Folder node is collapsed - this is very annoying I guess, to expand all the nodes you've had expanded ...
The same reason as #89662. The SourceNodeFactory creates keys which replaces the old nodes even when they are equal. *** This issue has been marked as a duplicate of 89662 ***
verified duplicate