Compare https://hexbear.net/u/tree@lemmy.ml to https://lemmy.ml/u/tree . The post to c/technology a month ago, when Hexbear was on Lemmy 0.18, is visible on Hexbear, but the two more recent posts aren’t showing on Hexbear, after the 0.19 upgrade.

Also see that @dessalines@lemmy.ml posted to /c/technology@hexbear.net yesterday, and the post is not showing on Hexbear. You can only see his post if you view it through https://lemmy.ml/c/technology​@hexbear.net instead.