Can't delete D365 dashboard with Power BI content

I'm running in to a weird bug when embedding Power BI dashboards as CRM dashboard in Dynamics 365:

A Power BI dashboard has been shared with a user of Dynamics 365 for Sales and this user has added this PBI-dashboard as a CRM dashboard in D365.

Now the owner of the original Power BI dashboard revokes the rights to it for the D365 user. Because of this the Power BI-dashboard is no longer visible on the D365/CRM dashboard. The user gets the message "Content no longer available". If the user now tries to remove the D365/CRM dashboard he/she is not allowed to ("Access denied")

Did anyone else encounter this problem? And is there a way to remove the now useles D365 dashboard?

Thanks!