Edit: Fixed, if the same happens to you check the comments.
I cross checked some pages with two browsers, only one of them logged in, and I couldn’t see all posts when logged in. And though I can still open them through the URL, I can’t see any comments on the posts that don’t show up.
Same happened on an iOS app, so it’s not a browser issue.
Potentially as well, the post was specifically set to english and thus not having that selected in your profile means it wouldn’t show?
I wonder what the default is for logged out users- I think it must default to all languages given your experience