Hi Gabe,
before my post, I googled it and found exactly that.
"Show Snapping Candidates" is definitely turned OFF, it still happens
Try this: Create two rectangles of any size. Select both and group them. Then click somewhere other to deselect them.
Instead of just be deselected in an instant, both rectangles will be outlined in magenta then slowly fade into being deselect.
Select and deselect the same group again and it will not happen any more.
I don't know how to record that into a video, but follow my description and you will see.
When I open any of the "UI sheets" of Grade UI Kit and klick on any element, this will happen too. "Show Snapping Candidates" still OFF!