Would ask that polygon reveal using shift to snap to grid work on hexagon grids.  Creating an object on hexegons works find using snap... these can even be sent to other layers (say from object to GM layers, good for highlighting areas of the map that might have an enemy army in them.)  However, using the snap on a fog of war, when using the shift to snap, the revealed areas always go to squares even if the grid is on hexagons.  Since snapping on hexagons on the object drawing function works fine, obviously it's not a technical limitation... Thanks