Items not always removed

[RPMallett]

The drag and drop demo was very useful, thanks!

In DragDropDemo, I found that if I was quick enough doing the drag and drop, the item was sometimes not removed, as below. I initially discovered this in my own app where the two listviews were closer to each other and the issue happened frequently. I think it has something to do with testing the HitTest result in TodoItemList_DragLeave, but I'm not sure as this is new to me!

[StefanoRivolta-Previero]

I've noticed the same issue as well, but I'm not sure what may be causing the bug.
Some things I've noticed:

• The issue seems to be linked to HitTestResult returning a value instead of null when exiting the listview

• It seems to only happen on the top and left border of the first listview:
  

• It doesn't seem to happen if I add an extra column exactly as wide as the other two (add a ColumnDefinition Width="*")
  

TBH, I've tried a bunch of things and still have no idea what the hell is happening