Why are supposedly ActivityPub-federated Discourse threads inaccessible via external AP clients?

[rokejulianlockhart (Mr. Beedell, Roke Julian Lockhart)]

@icaria36

https://meta.discourse.org/t/why-are-supposedly-activitypub-federated-discourse-threads-inaccessible-via-external-ap-clients/356997 cannot be found on Mastodon.

@icaria36, it’s probably a fault of Mastodon’s, then, since Discourse federates it:

Why is Discourse content inaccessible? · mastodon mastodon · Discussion #34600