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Has this changed? I now see a member rank AND copper member on a user's profile.
Before you would only see one rank.
I was trying to find out the same this evening. The copper rank shows on the left on the post, but not on the user profile. Perhaps I has never paid attention to this before, but now copper is on the agenda for Newbies and perhaps we look at it more than before.
I checked on the WayBackMachine ad found cases that behaved as now. For example,
https://web.archive.org/web/20171125014306/https://bitcointalk.org/index.php?topic=1172918.80 is a snapshot from 25/11/2017 and on the thread, theres a post (#93) that shows:
ronchad
Copper Member
Jr. Member
So apparently this is unchanged, unless it has been on and off and back on again.