Release event of item in a draggable popup isn't fired when the popup is moved

When you press an item on a draggable popup the press event is fired, when you then move the popup around a bit, the state of the item goes back to state 1, which maybe is too early because i didn't release the item yet. After you moved the popup the release event of the item isn't fired, which is strange because I touched the touchscreen -> press event is fired, then i released the touchscreen -> release event isn't fired
This way you get unpredictable behaviour for the items on a draggable popup, especially when you accidentally move the popup a few pixels.