I assume you used an alt account? When i click your username it only shows this post. Can you link the question you posted?

Edit: Opening you user profile from your own instance does show your two posts on asklemmy. Once i opened them on beehaw i can now see those posts in you user profile from my instance.

I remember reading something like this in federation. Just because two instances are federated it doesnt mean they share everything at first. Its when you visit another instance’s community where its posts get finally federated for everyone to see. Or something similar. Could it be that it happens not only to comms, but to user as well?