custom keyboard shortcut forgotten after restarting gnome

[Vicente Reyes Valdivieso]

Ubuntu 18.04.1
gnome-control-center 1:3.28.2-0ubuntu0.18.04.2
mutter 3.28.3-2~ubuntu18.04.2
I don't know what else is important

I installed Ubuntu and changed the shortcut for closing a window (It's called "Cerrar la Ventana" in spanish) from Alt+F4 to Super+Q using gnome-control-center. It worked well
Then I restarted gnome (Alt+F2 then "r") and it stopped working.
It's weird because:
1) My other custom keyboard shortcuts keep working
2) gnome-control-center still reports it as being super+q
3) if I try to "change it" to super+q again directly that doesn't fix it, but if I change it to another thing first and then back to super+q it works well.
4) If I restart gnome again, it stops working again (just that shortcut, not the others)

[Vicente Reyes Valdivieso (vichin-seacabo)]

I don't know what I did but it doesn't happen anymore (😕)

[Sebastien Bacher (seb128)]

Thank you for your bug report. Could you add your journalctl log from a session having the issue?

[Vicente Reyes Valdivieso (vichin-seacabo)]

There it is. I think I found the reason this happens, though. It's the dash to dock extension, which overrides the custom commands:
https://askubuntu.com/questions/977876/changing-command-super-q

[Sebastien Bacher (seb128)]

Thanks for pointing that the dock is conflict with that specific keybinding, reassigning