This whole system doesn’t work when you don’t see the same content from two different instances. I have a lemmy.ml account and subscribe to a community on lemmy.ml; I also have a lemmy.ca account, but if I log in there and subscribe to the same community from lemmy.ml, I don’t see the comments.

So if I actually want to interact with the community, my account needs to be on the same instance. From my reading I can’t tell if this is intentional or a bug, or permanent or temporary. Either way, it’s happening.

So you’re going to see this with every community migrating from Reddit because people want to follow the community.