It happens with US culture. Available in LIB version 2015.3.1019, it will be also available in the 2015 Q3 SP1.
when on Month view change year by prev/next button and select same month, year is not saved
It happens when the control is focused and you press tab in order to focus next control. Available in the 2014 Q1 Release.
For reference Ticket ID: 766908.