@[email protected] 因为你所在的服务器不知道他们有没有更早的嘟文：

> When you browse the federated timeline, you see all public posts that the server you are on knows about.
> There are various ways your server may discover posts, but the bulk of them will be from people that other users on your server follow.

https://docs.joinmastodon.org/user/network/