When I have gumball aligned to object, and I manually drag one grip with the blue arrow, it moves in the direction of the normal.
But when I select more than one grip, they move in the direction of world Z.
I think in this case the grips should move both in their individual normal direction when gumball is aligned to object, the same way as when the drag mode is set to UVN.
For me remembering the distance the gumball is moved is very useful (especially when a +/- switch would be added to the numerical input field).
It should also, when the movement was in object direction, remember that. Now it does not. Moving multiple grips in one go by numerical gumball input does not respect the “to object” setting. And in this case, setting drag mode to UVN does not help.