lemmy.ca difference in community posts?

I have an account on beehaw.

lemmy.ca is federated with beehaw, both way.

I subscribed to !quebec@lemmy.ca and created a post, from beehaw. I can see my post here:

https://beehaw.org/c/quebec@lemmy.ca

but not on the lemmy.ca instance:

https://lemmy.ca/c/quebec

why? How does this work?