635 doesn't load for me though so I'm assuming it was deleted by admin/mod.
I suspect this is all on lemmy.world's side, they've been having stability problems and haven't updated to 0.18.3 yet either.
lemmy=# select id, name, ap_id, published from post where id in (2238275,2238125);
id | name | ap_id | published
---------+----------------------+----------------------------------+----------------------------
2238125 | Use an issue tracker | https://lemmy.world/post/2355428 | 2023-07-29 20:59:17.029512
2238275 | Use an issue tracker | https://lemmy.world/post/2355635 | 2023-07-29 21:04:12.02136
(2 rows)