Datepicker - Resets another controls date

[jjoeanand]

Steps to Reproduce:

Two form textbox controls exists next to each other ("From" and "To"). Both controls have datepicker option.

Action:

1. Ignore the datepicker calendar option in "From" textbox and MANUALLY enter the full date.
2. Use TAB control to navigate to "To" textbox.

3. Pick a date for the "To" textbox from the datepicker calendar using DOUBLE-CLICK.

4. Notice the month value of "From" text box resets to a different value.

Manual entry on the first textbox and DOUBLE-CLICK date selection on the second text box are the key steps to reproduce this issue.

The above stated issue can be reproduces in the datepicker's "date-range" example from jqueryui.com

​https://jqueryui.com/datepicker/#date-range