Try if the workaround for bug 787465 fixes it for you (sudo apt-get purge appmenu-gtk appmenu-gtk3, re-login).
Might be caused by the same menu proxy.
Try if the workaround for bug 787465 fixes it for you (sudo apt-get purge appmenu-gtk appmenu-gtk3, re-login).
Might be caused by the same menu proxy.