[Zren]

https://www.redditstatus.com/

> Comment tree processing is delayed

* 19:17 PDT Investigating - We are aware that newly posted comments are not showing up immediately in comment trees. We are currently investigating this issue.

* 20:26 PDT Identified - We've identified the underlying problems and are working on addressing them.

* 21:08 PDT Update - We are continuing to work on addressing the issues causing comments to be delayed.

* 21:31 PDT Update - A large spike in traffic caused some scaling issues, which delayed new comment display across the site. All comments posted during this time will be displayed as the servers work through the backlog.

* 22:05 PDT Resolved - Comment processing has now fully caught up. Thank you for your patience!

This makes sense why https://old.reddit.com/r/all/comments/ worked but the nested comments in threads don't.