This is strongly related to the other issue(s) regarding banning and display names, but I think merits its own bug report:
Past members, whether having left or been removed, no longer have their display names shown beneath their messages in the archive. The display name is replaced with three dots. However, if you ban a member who has already been removed, their display name COMES BACK TO HAUNT their messages in the form of their default (system-wide) display name.
Whichever way you call it, this is inconsistent. Either past members' display names should show up below their messages or they not (I personally think not). If not, they should not show up for banned members, either, since they are also gone. If yes, then they should be displayed for past members as well.
Messages are the sole opinion of the author, especially the fishy ones.