Version of MfH: 2.5.5
There is an error in the translated message that is displayed after changing status of a ticket.

As you can see, the message is "Sucesso: Estado do ticket alteradoo com sucesso"
Where the second letter o in the word alteradoo dosen't exists. The correct is alterado.
This error can be fixed just changing the string at \language\pt-br\text.php line 1289 to the correct word.
Thanks!