I often find reading text to be a poor medium for communication. As 70% of communication is miscommunication, the lack of non-verbals, tone of voice, and propensity to read between the lines, the likelihood for miscommunication only increases and it can be easy to misinterpret the meaning of words to come to an alternate, and unfortunately mistaken, conclusion. I believe that is the case here, as I am not placing blame or fault on anyone. I am merely trying to gather information and offer possible solutions along with my reasoning behind them.
You mentioned:
I just tested the email template on a new Blesta installation, but sadly, was unable to experience this issue myself. If it is indeed an issue with the default template, we would like to fix it immediately. That said, I have not had anyone else come forward yet with the same problem, so I only have your information to work from.
I wish you the best of luck with your new system.