MouseArea, unexpected position change event with incorrect coordinates after releasing event

When a mouse is moved with pressed LMB and then released, there is an unexpected position change event with incorrect mouse coordinates:

qml: onPositionChanged y:285
qml: onPositionChanged y:290
qml: onPositionChanged y:292
qml: onPositionChanged y:294
qml: onReleased y:294
qml: onPositionChanged y:39

To reproduce:
1) Run the example.
2) Hover cursor over the red rectangle center.
3) Press left mouse button.
4) Move the cursor down out of the rectangle and release the button.

It shows "onReleased" and then the unexpected "onPositionChanged" with incorrect coordinates.
The bug is reproducible only one time, then the program has to be restarted to reproduce it again.