We're currently running the latest release candidate of Lemmy 18.2. It has many fixes; however, there are still some remaining issues.
One example is that some buttons do not appear correctly on the dark themes. I will keep my custom dark theme as the default theme for now. I think it just looks better, even with broken upload buttons. I will attempt to apply a fix to it later today.
If you see any other issues, please, let me know so I can forward them to the core development team-- if you don't wish to do so yourself.
Thanks a lot! -jgrim
Yes, exactly. And the first time you do the sync, it only pulls the past 20 posts. So it doesn't pull down the full history.
If you see a post you specifically want, you can search for its URL, and it'll pull it down if someone has already joined the community. If not, and if you see a post that's 21 posts old, you'd first search for the community to start the syncing. Then you can search for that old post to fetch it down.
It's a bit cumbersome currently. But it's new and will get better with time. Mastodon is another federated network, and they have some workaround to prevent such a headache. We'll get it soon enough.
But once a community is in sync, it'll stay in sync from now on. So it's only a headache until there are regular links between instances.