Unable to open Mashup via New Tab from iFrame
I am attempting to display a Mashup in SalesForce through an iFrame and have set the below properties to the iFrame:
referrerpolicy="origin"
sandbox="allow-downloads allow-forms allow-popups allow-same-origin allow-scripts"
ancestors="self"
Along with this we have also whitelisted the SalesForce URL in ThingWorx that is mentioned in this documentation.
After doing the above changes when I am navigating to the iFrame I get the below authentication display which passes successfully and I am able to open the mashup in a new tab.

However on that mashup if I attempt to invoke a Remote Session I get the below error:
Refused to frame ''because it violates the following Content Security Policy directive: "frame-src https://company--test.sandbox.lightning.force.com".
I am a bit confused as to how this issue is coming in the new tab window? Any pointers?
Thanks,
Ashish Tamhane

