## Steps to reproduce

* Create new work package and open date picker
* Click on Today link under Start date
* ✅ Start date is set
* Click on Today link under Finish date
* ✅ Finish date is set
* ✅ duration is filled automatically
* Click on date on the calendar _after_ the current date
* ✅ Start date is changed
* ✅ Finish date is removed
* ✅ duration is removed
* Click on Today link under Finish date
* ✅ Finish date is set
* ❌ Start date is set to the same date
* Expected behavior?
* ❌ duration is not computed
* Expected behavior?

Derived from Christophe's comment here: https://github.com/opf/openproject/pull/11288

The datepicker may not receive a date range where start date > due date. But this is exactly what happens when using the "today" link of the finish date.

Suggestion: Use the same behavior as in #43539 scenario 13, but applied for Finish date Begin of the insertion

End of the insertion Begin of the deletion



End of the deletion > #### Begin of the insertionScenario 13aEnd of the insertion Begin of the deletion **Scenario 13a**End of the deletion
>
> * Setup
> * Start date: Tuesday, February 9, 2021
> * Finish date: Begin of the insertionemptyEnd of the insertion Begin of the deletion Thursday, February 11, 2021End of the deletion
> * Duration: Begin of the insertionemptyEnd of the insertion Begin of the deletion 3End of the deletion
> * Today's date is Tuesday, February 16th, 2021
> * Change
> * The user clicks the "Today" link of the Finish date.
> * Expected result
> * The finish date is set to February 16th, 2021
> * The start date is cleared.
> * Duration is cleared.