DragHandler combined with HoverHandler sometimes provides wrong position

We're experiencing an issue when both a HoverHandler and a DragHandler (dragThreshold = 0) are attached to an Item. Sporadically, the reported position is completely wrong and points towards the top-left corner of our window. This breaks all of our draggable controls.

Try the attached example QML script and repeat press-move-release gestures a couple times. In the attached video you can see the bug happening, which is indicated by the label jumping to the top-left corner of the window even though the mouse roughly in the middle of the window.

The issue appears regardless of whether a mouse or trackpad is used.