We're using Facebook's JavaScript SDK (v2.8), specifically it's Feed-Feature, on one of our pages.

In MSEdge, I'm seeing multiple errors inside the console, specifically things like Uncaught SyntaxError: Unexpected token ':'. Yet, the feed is loaded and appears to work without issue. Further, user-reports indicate that the feed does not work on multipke iOS-Versions, namely 14 and 15, as well as Mac OS Monterey. Yet, when I use BrowserStack to investigate, it works on iOS but doesn't work on Monterey, where errors about an unrecognized content-security-policy 'worker-src', as well as X-Frame-Options being set to deny, are thrown. What's throwing me off is the inconsistency, with which these issues manifest. I'm pretty sure that it's a problem on Meta's side, since all errors are thrown from scripts, that are included by the Feed's iFrame. There's very little code to show.

Has anybody dealt with similar issues? A Google search has yielded some similar cases but no working solutions. I've tried upgrading the SDK to a later version but the issues remain.