@jorrflv I’ve never seen this problem before, and I was able to successfully create a two-feed setup using non-Nest URLs, so I’m wondering if this is a quirk of Nest cams when they are in iFrame mode, a quirk of Safari, or some mixture of both.
Option + ⌘ + C.
Also, have you tried this in a browser other than Safari? Some browsers do not appreciate cross-site iframes because it has a potential for abuse (despite the fact that the Nest URL is trusted).
As a side note, it’s worth mentioning that we may remove or significantly change this feature in the future, as it does create problems for browser content security policies. Specifically, when we add sharable content to the app.