I can see a submission from you about SE from ~1h ago.

Thanks for the info. I went through what I had thought was enough Show posts to find it, but apparently not enough :-( I haven't been on Hacker News in a few years and forgot how it works - I should have checked my submissions section. Though some websites mention that it can be hard to detect shadowbanning, so perhaps even checking submissions wouldn't have been enough. Good to see my post is still public.

They all go to https://news.ycombinator.com/shownew , only after a few upvotes they go to https://news.ycombinator.com/show , but I don't know the threshold.

Good to know... Thanks for the info!

It didn't get removed. It's here: https://news.ycombinator.com/item?id=49631258. Just nobody upvoted it.

Thanks for the info. I went through what I had thought was enough Show posts to find it, but apparently not enough :-( I haven't been on Hacker News in a few years and forgot how it works - I should have checked my submissions section.