ERPNext Timesheet - clicking on "NOW" button take no action

I have updated my ERPNEXT to Frappe Framework: v13.15.0 (version-13) and there is a problem with the timesheet. Usually at the end of our task we are all used to click on the “Now” button in the “end date” field and the “Working hours” column takes automatically the working time, which is not the case anymore, unless you enter the “end date” manually.

Is there a solution for this and/or do others have the same problem?

Maybe you know why and how to fix it?

Thank you and Warm Regards