Change connected Google Analytics 4 property in Looker Studio

i have a Google Looker Studio report with a connected Google Analytics 4 data source with calculated fields.

When i want to change the connected GA4 property, i can manage the data source and change the connected property, but the reconnect button just blinks and the confirmation window never shows up and i can’t update the connection.

When i try to do this with the demo GA4 Report from Google or any other data source (Sheets, Search Console, ..), the confirmation window is displayed and i can switch the source connection whenever i want. Only in my custom reports, it can’t be changed.

Has anybody experienced this? Do you know how I can fix this?