Datepicker - changemonth not workig

[viktorvi]

Month selector is not working. It start to work, if you change the year before.

https://jsfiddle.net/bm42r3oq/

[mgol]

Thanks for the report. Does the issue you describe exist when jQuery UI 1.12.1 is used or only with jQuery UI 1.13.0 or newer?

[viktorvi]

1.11.4 is working correctly.

I am able to reproduce the problem when numberOfMonths option used with jQuery UI 1.13.0 and 1.14.2

$(function() {
$('#calendarDiv').datepicker({
numberOfMonths: 3,
maxDate: 0,
stepMonths: 1,
changeYear: true,
changeMonth: true
});
});

[mgol]

What about 1.12.1?

[viktorvi]

1.12.1 contains the problem.

I have attached examples.

1.11.4-Working.html
1.12.1.html
1.13.0.html
1.14.2.html

[mgol]

Thanks for the info. Since the issue is already in 1.12, given limited team resources it's not likely to be fixed by the UI team; see the project status at https://blog.jqueryui.com/2021/10/jquery-maintainers-update-and-transition-jquery-ui-as-part-of-overall-modernization-efforts/. PRs are welcome if they're not too complex and contain tests.