Make a window shortcut permanent

I want to be able to always make the terminal window pop-up with focus with the same keyboard shortcut.

I've found so far that if I right-click the window and go to More Actions > Window Shortcuts, it does exactly what I want.

The problem is, the shortcut doesn't survive the window close. I would like to find a way to make this permanent, even after reboot.

Please note that I'm not asking for a global keyboard shortcut to open the window, that is already correctly configured, I only want to give the focus to the window as the window shortcut does.