Is it strictly for the nostr protocol or also related stuff? I noticed some irregularities with YouTube links/embeds, but I would need to do some testing to create an issue.
Discussion
The only requirement is two or more nostr apps must be involved.
If it’s Damus that has a YT embed issue that’s for Damus github, and so forth.
If it’s a Damus x Mutiny interaction then it’s a #nostrability issue.