We use ScrollView a lot. However, we recently found a problem with ScrollView and the mouse interaction. The problem comes when the ScrollView contains items that interact with the mouse: The items loose mouse focus, when the mouse is moved vertically!

A more detailed description:

• Our item is derived from QQuickPaintedItem, and overrides the mouse events for click and move.
• The first mouse (left) click is always received correctly by our item, and accepted by us.
• Mouse move (while button pressed) is still detected ok for a short while, as long as the mouse is moved mostly horizontally.
• As soon as the mouse is moved more vertically, no more mouse events are received by our item.
• While we observe the problem, the ScrollView does not scroll, but this is most probably because the ScrollView is under-full (and there is nothing to scroll)

Note: Our item does call accept() on all mouse events that it receives, so that they should not be forwarded to the ScrollView.