Flickable doesn't handle multitouch well

STEPS LEADING TO PROBLEM:
1. open a QML Components
2. Pan it with your finger
3. Put another finger on the display
4. Relieve first finger

EXPECTED OUTCOME:
Nothing happens.

ACTUAL OUTCOME:
the list in the Flickable jumps from first finger coordinate to second finger coordinate. (this
happens when
first and second finger have vertically different coordinates)

Put another finger back on the screen and view jumps again.