When using the calendar widget (for instance, setting the targeted date) and having to navigate several months backwards/forwards, the previous/next buttons jump up and down depending on the number of weeks in the displayed month. When clicking quickly (if you want to go back 5 months), this leads to selecting a random date because the position of the previous button is replaced by a date.
Picture says more:
A nice UX enhancement would be to fix the position of the navigation buttons in the calendar widget.
