Comment 5 for bug 1562002

Unity status is unknown, I only have Ubuntu Gnome installed.

This applies to any action in the menu, "Invert selection" "New Tab" and any other I tested.

This is causing the whole desktop to hang. I opened the system monitor to see if it was causing the processor to hang, upon using an item from the menu, the system monitor's "resources" screen froze for the entire time of the lag-nearly a minute as I recall). When the desktop was working again, you could see where the CPU's had been spiking one at a time to 100% then dropping as the next one spiked for entire history shown (mine is set at 60 seconds)