get the wrong entry after the menu closes

When using a QComboBox, if you do a click, drag, and then release to pick a new value, it's possible to sometimes get a different entry selected after the menu is closed. I find this hard to reproduce (but it is possible, see the attached movie). It requires dragging to just above the bottom edge of the entry (or below the top edge), then drifting down/up to the next entry in the menu as the menu is in the process of closing. You'll notice the menu strangly displays two entries as selected momentarily, then the other entry ends up getting selected when the menu is closed.