Describe the bug
Dragging non-consumable items from bag to actionbars when "empty buttons" are hidden (1) doesn't show empty actionbar buttons and (2) doesn't hide empty bag slots after leaving their area (mousing out)

Examples of non-consumable items:

• quest items
• Frostweave cloths

To Reproduce
Steps to reproduce the behavior:

1. Uncheck Show empty buttons from an actionbar setting
2. Open bag
3. Drag any non-consumable item into an empty action bar slot; while holding down mousedrag, move on to the next empty slot.

Expected behavior

• Empty buttons should be visible when the item drag starts
• As an item is dragged off a slot (while still on a dragging state), the slot should

Additional context
Dragging a non-consumable item may not trigger the same event as a consumable item.

A few reasons non-consumable items are allowed in the actionbar slots are

1. Items a character uses to complete a like torches, etc, are handy to place temporarily on actionbar. If a character needs to collect N items for a quest, it's nice to see how many have been collected so far.
2. Non-consumable items like cloths, food, i.e. materials may be placed so that a character can keep track of the count without opening a bag. Note that the standard blizzard actionbar slots does not allow non-consumable items.