I have a few trades which I proposed or which were proposed to me that were canceled for various reasons. In the final list on the trades page, they should (and do) all show the red circle icon indicating the trade was canceled. Some show the hourglass for "the user needs to accept or deny the trade". Some show the green arrow for "the user has proposed a configuration for the trade".

After the trade is canceled, the other icons aren't really relevant anymore.

Will check it out, definitely sounds like a bug.