Posts not appearing in communities when other group actors are mentioned.

Tried making a post (link below) to a lemmy community while also mentioning two other groups. My post never appeared in the Lemmy community.
This seems like a bug, when I tried posting to two lemmy communities at once the first went through, the second did not.

Does anyone know what’s up with this?

@lemmy_support

  • Draconic NEO [Meta]@chaos.socialOP
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    17 days ago

    @db0 Might be, I can’t be sure if it’s just the first one, or random. I don’t really want to try, my instance admin might not be too happy with me posting too many test posts in the name of science.

    Though the weird thing is that it just straight up denies it even if the other groups aren’t Lemmy or federate with Lemmy, which Guppe groups don’t.

    @lemmy_support

    • db0@lemmy.dbzer0.com
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      17 days ago

      Ye I really don’t understand how the same post in mastodon is possible to appear in two different groups, but not in lemmy. I am not familiar enough with the internals.

      • Draconic NEO [Meta]@chaos.socialOP
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        17 days ago

        @db0 on Mastodon it just boosts the posts, I assume that’s what Lemmy also does in addition to copying it and formatting the data as a post.

        If I oversimplified or got that wrong I’d definitely appreciate if @dessalines or @nutomic could correct me on that. As far as I know there doesn’t seem to be a reason why the same post can’t appear simultaneously in multiple communties, since they’re just boosts and duplicates on the federated instances. @lemmy_support