One month ago, two tickets were opened by two different people for the same bug.

I picked the one with the most informations and rejected the other by giving the ID of the other ticket, and then assigned it to the person who opened the ticket.

Today, I see that ticket coming back to me, with the status back to Open, and the comments "The ID given is this ticket's ID!"
I mean, yes, I did a typo and typed a 5 instead of a 6.
They could, like, test to see if it was patched (been one month), or contact me by mail or Skype to ask me if I didn't make a typo in the comments, but no, they decided to reopen the ticket for this.

Thanks.