When the from address for a new message is changed, remove auto bbc addresses attached to the old from address
The mail address I use the most (and therefore have as the default address for composing new messages) has an automatically applied BBC address. When I a new window to compose a message it has this BBC address attached (as it should!) however when I'm intending to send the message from a different address and change the from address the BBC address remains.
If I wanted that BBC applied to all of my messages I'd expect it to be applied in global settings. If I don't have auto BBC set up for an an address and don't manually type one in I would expect that email to send without one, as is that is not the case.
It seems like a small thing but it basically makes the auto BBC feature useless. Either I need to clear the bbc field for messages sent with 3/4 of my addresses or I have to manually enter an address in to the field every time I send a message from my most used account.