This used to work for me recently, but I somehow deactivated it and cannot seem to figure out how to turn it back on. I hold the the ALT key whenever I want to enable my snaps, and it used to work that GridSnap also turned on when I held down the alt key. It isn’t doing this anymore, and the only way I can activate GridSnap is to manually click the button on and off.
How do I go about adding GridSnap back into the list of snaps activated by the ALT key?