Paginated Reports - Prompt - Date - Calendar - Picker - Issues

Hello everyone.

Something strange have happends to all our Paginated Reports in the Service.
We have a lot of reports with date prompt and where you can click on the calendar and choose dates.

But, when we click on a date it just closes. Same if we try to change the month.

The work around is to delete the default value 1/1/2021. Then it works like a charm.
But this has worked fine before, we never had to delete de default values before picking dates.

Anyone else with the same issue? Is this a bug I have to report to Microsoft or something else I have missed?

Best regards
Marius Sveen