I have my job IMAP account set up in TB 3.0.3.
It's becoming very annoying that in group emails where I'm in the CC or TO list I hit "Reply To All" and I find myself in the recipients list. So when I send the email I also get a copy of my own email.
I haven't found where to disable or modify this.
This doesn't happen with my Gmail account (also set up in TB)