Title, why are there missing posts and how can I fix that? (Tried searching, so sorry if this is a common thing)
For example, !smashbros@lemmy.world is missing tons of posts when I view it from lemme.ee, but you can see them on lemmy.world and the OP’s home instance
https://lemm.ee/post/26360 https://feddit.it/post/300204 https://lemmy.world/post/46760
A lot of it currently is just down to issues with federation. Like another user posted, you can trigger a sync of new posts and comments manually, so that should help in cases where you’re after a specific post or comment.
A more long term solution will be optimizing Lemmy federation code and improving Lemmy instance server resources for bigger instances. Both are actively being worked on!