toggling guake show/hide under wayland looses focus

Hi,

I am running Arch GNU/Linux with Gnome shell 3.16 on top of Wayland.
I have F12 set to show/hide Guake but when I run it under Wayland and press F12 Guake does not appear. This happens when I have no other apps opened. If I have any app opened and focused (for example Firefox) and press F12, Guake appears.

Another related issue is once Guake is opened, if I press F12 again to close it, it does not close. I need to press other keys and then F12 in order for it to work.

Basically I cannot press F12/F12/F12.... to show/hide Guake. I managed to reproduce this on Arch with Gnome shell 3.14 and Wayland also, not only with 3.16. It runs perfectly on Xorg on both Gnome shell versions.

If you wish I can try to make a Vagrant box with GUI running a Fedora and I can make it easy for you to reproduce it.

PS: This bug it the only thing blocking me from switching to Wayland :P

Thank you for building Guake! :D