archives menu fills up with duplicate entries

Sometimes the archives "new archive" menu fills up with duplicates... JAR WAR EJB EAR JAR WAR EJB EAR JAR WAR EJB EAR

Also appears when debugging the menuAboutToShow2 method which adds the new items. Apparently if you breakpoint in menuAboutToShow2, pressing "play" again removes focus from the runtime workbench and something upstream must be causing this to not properly empty the menu items.