as can be seen in the second post, the “replied to user” ( a reply icon besides user fefrei) is visible, but it is not seen in the post above. It was there before i edited it and saved the first post
I think this is by design. There are settings on when the reply indicator is suppressed.
suppress reply directly below
suppress reply directly above
suppress reply when quoting
In your example, it is
suppress reply directly above that is taking effect, with the description of “Don’t show the expandable in-reply-to on a post when there is only a single reply directly above this post.” and this setting is enabled by default.
ohk… thanx for the info