Embedded dashboard not auto updated

After investigating further ourselves, the call being made to “refreshUserMetadata” returns a 400 error because the samesite property of one of the Power BI Auth cookies isn’t set and so is being treated as lax rather than “none” and isn’t accepted.

This would explain why the dashboard tiles do still auto-refresh as expected when viewed when logged into the Power BI service, but not on an embedded dashboard using iframes to embed it (where cross site becomes a consideration).

We are trying to escalate this through Microsoft Support but they are not being very reactive. This bug occurs in Edge, Firefox and the latest version of Chrome. Tiles on any of our embedded dashboards using streaming datasets no longer auto-update because of this bug and it is affecting a number of our paying clients.