When switching to Advanced mode in Wobbly Windows, it gives freedom to customisation but also leaves the user at risk to make the effect buggy.
When the Stiffness and Move factor are both high, a little movement of the window makes the animation go crazy and never stop.

While moving the Stiffness slider to higher values, the maximum allowed value on Move factor slider should be reduced and the same goes for Move factor -> Stiffness relationship.

A video demonstration of what happens when the values are high: http://www.youtube.com/watch?v=QxOQ_VEqqPI

Reproducible: Always