BTW, I should be clearer about what happens. The subject here says "application crashing". In my case, that's somewhat inaccurate: the note in the main window freezes, but the menus are still available, and I can open the note in a new window and edit it. My impression is that the application just takes a long time, sometimes minutes, to get around to showing the right-click menu. And in the meantime, there's nothing I can do in the current view of the note.