Can i Haz my menus?
When searching specific entries in my firefox menus, submenus in the "Tools" entry did not always open. After opening/closing many times menu entries, they randomly began not to work, until all my menus were unusable. I can reproduce using Emacs or ClawsMail. Clicking on an invisible menu entry triggers the proper action, so i guess it is a mere repaint problem.
All these were GTK apps, but it is reproducible with QT4 (tested with qtdemo).
Stopping Unagi restores the universe as it should be.