I cannot see comments made by lemmy.world instance when logged in to discuss.online. Not sure if any other instances are affected this way. I also cannot search some communities. I have not figured out a pattern. I wonder if it is intentional. Here is an example: https://discuss.online/post/202378. There are a few comments under the post, but I do not see them.
Federation of messages is limited to communities in which at least one account on a Lemmy instance has subscribed to on another instance. At that point, only new posts and comments of that community will be federated.
For example, if no one on discuss.online was subscribed to https://lemmy.world/c/gamingsuggestions at the time https://lemmy.world/post/943892 was posted, there will be no comments federated to https://discuss.online/post/202378. Once a user on discuss.online subscribes to https://lemmy.world/c/gamingsuggestions, only posts and comments from that point forward will be federated.
If you search for the comment’s federation link (Example: https://lemmy.world/comment/728524) you can pull the comments locally.
It appears that by searching for each of the comments, I could pull them down. This makes be believe it’s not an issue with sync but an issue with broadcast.
I’ll keep looking into this; that specific thread has been pulled down for now. Let me know if you need help pulling any more down.
Just by pasting the full URL of any Lemmy page or link, you can fetch it locally on the search page: https://discuss.online/search
It looks like lemmy.world was all experiencing a DDoS attack. So some things didn’t sync well—some things we’ll have to trigger to sync manually.
I will work on a solution for this to pull down missing content. Until that’s done, we’ll have to manually “search” for URLs to sync data.