I’ve tried a few communities between lemmy and kbin this way.
When i’m logged into lemmy(or not) and view some kbin community it shows me there is either scarce community activity or none at all. While if i visit the original community on kbin it shows a lot more.
The example with the pc gaming community works well. lemmy shows the last new post was 13 days ago. and kbin shows multiple posts made only 3 hours ago.
Another example: Stargate through lemmy shows 0 posts while kbin has low activity but does have posts 3 weeks ago.
Can somebody confirm this? Is this a bug?
I have the same problem with [email protected]. Tried subscribing and posting from lemmy.ml, but I don’t see posts here beyond the one I created (which btw didn’t become visible at kbin.social, so it’s not working both ways).
Edit: this morning I edited an existing post I made from lemmy.ml to kbin.social. The post showed up with its edit. A bit later I also saw a post from kbin.social show up in lemmy.ml, so I think interacting with content will at some point force federation if it was not working initially. YMMV