I couldn't search for it either. Is this intentional?
Not intentional!
Took a bit of digging. The post was federated, but it showed up to me as "Removed by mod":
Looking through the post's moderation history, I find that the user was banned from community and then unbanned. I also see some removed posts from that same author to that same community around that same time.
My guess is that the most was removed by mod, then restored, but only the removal federated through and not the restore.
I have manually restored it, so you should be able to find it now: https://mander.xyz/post/977581/19535554