Year input value changes unexpectedly on pressing Enter.

[minamz]

This is happening with datepickers we use with locale: Japanese, and using dateFormat "Y年m月d日". We are continuing investigation to find if issue is on our side but not yet found the reason.

To reproduce

• open datepicker and change MONTH dropdown ; select any other MONTH (other than January)
• hit Enter
• the YEAR changes to an unexpected value.

Basically anytime a MONTH is selected and press Enter, the year input value changes to undesired values; with the exception of January (which doesn't reproduce the behavior.)

Please see below animation:

Also noticed the pattern January -> no change of year Feb -> year changes to 1901 March -> 1902 April -> 1903 May -> 1904 etc.