Calendar relative date filter - first day wrong

Hello community,

I use a calendar table and an Excel-File with test data. I place a Table visual on the report and fill it with following data:

- Date

- Calendarweek

- Value

In put the Date-Field from the calendartable in the filter-area and set this options:

- relative date / 1 / calendarweek

The table start with Sunday! But the first day in Germany is Monday! The region options for this report is "German". I don't find a solution for this problem in the last two weeks 😞

Please help me..... thanks

Regards Torsten