Moving and scaling windows does not work when mod-key is changed

[OfficialKris]

Describe the bug
When mod-key is set to Mod1, I cannot change the size or location of a window with Super+lmouse/rmouse. When I change it back to Mod4 and make the window fullscreen and back again, I am able to.

To Reproduce
Steps to reproduce the behavior:

1. See above

Expected behavior
I can change size and location with Super key no matter what Mod is used.

[MaxGyver83]

When you set the mod-key to Mod1 (Alt), you can move and resize windows with the Alt key + left/right mouse button.

As far as I can tell, this is the common behavior in window managers. The mod-key affects WM key bindings and mouse actions.