This happens for me too. I'm running Gnome, under Wayland. When an X11 window is selected, F12 toggles guake visibility. When a Wayland window is selected, F12 does nothing. You can see something similar if you run xeyes and notice that they follow the mouse when it is in an X11 window, but not when it is in a Wayland window. (An easy Wayland window to pop up is the setting window from the top-right Gnome dropdown menu.)
> A workaround is to create a shorcut under System-Settings/Keyboard to make it > work. Excellent idea. I tried it too, and it works well. Thank you Goran for eliminating this pain point from my life! Details: At the bottom of the keyboard shortcuts settings panel, click the '+' button to add a new shortcut, name it whatever you want (Toggle Guake), give it the command /usr/bin/guake, and set it to the F12 key. I wonder if this could be done automatically by the guake installation scripts?
