Whenever I restart Netbeans it does not remember that I had the Mercurial window open, nor does it remember where I last placed it.
This doesn't happen with other windows; e.g. if I open the Subversion window it stays open between sessions.
Open mercurial window via Window -> Versioning -> Mercurial
Mercurial window is closed
*** This bug has been marked as a duplicate of bug 143300 ***