Move items by grid size does not work properly when grid size is set to frames

If I try to move items using the action "Move items/envelope points right by grid size" or "Move items/envelope points left by grid size" and my grid size is set to frames I get some unexpected behavior. The items move, but the audio contained in the items does not move, similar to if I were using the action "Move items preserving timing of contents" This only happens when the grid size is set to frames, If I set the grid spacing to any other size both the item and it's contents move: