Using ComboBox makes SwipeView animation unsmooth

When clicking on a combobox, the swipe animation is unsmooth afterwards, i.e. approximately after half of the animation there is a little break. See attached code for an example. It happens only on the first swipe animation, the next swipe animations are ok again.

Using the method "forceActiveFocus()" on another item seems to be a workaround for the reported problem, see attached code line 82.

This happens only on iOS (especially iPad 3 and to a lesser extend iPhone 4s), not on OS X, nor Android, nor Windows.