ListView positionViewAtIndex() function fails to keep up with changes in footer (and header?) geometry

Calling positionViewAtIndex is still using old information to position the view if called right after the footer height has changed. The positionViewAtIndex is always one step behind the height changes. You can go around to this problem is to call positionViewAtIndex asyncronously with a Timer (i.e. wait for the ListView to be in correct state). See attached example, the footer should visible in full with margin of 10 around it.