I don’t know what triggers this. I just occasionally cannot move a card when I left-click and try to drag it. The card will move slightly to follow the mouse cursor like the normal behavior of mousing over a card, but it won’t actually change its position. This can be fixed by interacting with another card. (possibly have to move a different card? not sure if other interactions like clicking a card to edit it fixes this state)
not sure I’ve ever seen this. If you can find a way to repro and let me know then I should be able to fix