Inadvertently, yes, because of a bug. We put it in the second-chance pool* when it was 3 days old, which was pushing the limit of how old a story can be and still get ranked on HN's front pages. Most likely it got taken out of that list when I restarted the server last night. Sorry! This is a technical limitation which hopefully we'll be able to relax before too long.

* https://news.ycombinator.com/pool, explained at https://news.ycombinator.com/item?id=26998308

Same. I bookmarked to read it, came back hours later, and couldn't find it unless searching for it.