iframe CORS error only for safari/ios client

[RBugs]

Dear All,

using Power BI RS May 2019 we're embedding reports in a web app through iframe.

From desktop (windows) with various browsers/versions it works fine.

From mobile android with chrome it works fine.

From ipad (with ios 12.3.1 and safari 12) it returns an "Access-Control-Allow-Origin" error.

Any idea?

Thank you very much.

[d_gosbell]

If you access these reports directly on the PBIRS portal do you still get a CORS error? If not then the issue is not with PBIRS, it is a problem with your web app and you need to work with whoever developed that to figure out a fix or possibly see help on web development forums.  

[RBugs]

Dashboard works like a charm when accessed directly using the very same url used in the iframe.
(As expected, being some kind of CORS error !)