Typically this is a bug with the user interface. A similar thread was made recently on this same topic.
In short, this isn’t possible and if so then it is a bug however what is most likely to have happened is that you got out of sync with the servers causing the user interface to show incorrect information.
In the future however please distance the post from making that sort of comment towards the Developers. As for now however I believe this thread is in order to be moved.