Thanks for your suggestion.
Turns out my issue was related to the parent object of the scroll view. When UICenterOnClick'ing the clicked element would center on the pivot of the parent object of the object holding my scroll view. Not sure if this is intended though, since I was assuming UICenterOnClick would use the pivot of the scroll view an not its parent object. Anyway, to fix it I just had to adjust the center position of the parent widget, so it was an easy fix in the end.