Control Center hangs when interacting with shortcut settings
Based on Bugzilla bug https://bugzilla.gnome.org/show_bug.cgi?id=777309.
When setting a keyboard shortcut, it's possible for the shortcut dialog to not appear. When that happens, the entire Settings window becomes unresponsive to any mouse or keyboard input except for the Escape key, which brings it back to normal. This also means you can't set your keyboard shortcut.
This doesn't always happen, but it is possible. So far, I can reproduce it on Xorg. The next time it happens, I'll record a screencast as proof.
Steps to reproduce:
- Open GNOME Settings->Devices->Keyboard
- Click on a keyboard shortcut to change it