"I've had issues editing email addresses in clients with multiple mails per line." This was my first reaction when I saw the change - I really hope they get th

"I've had issues editing email addresses in clients with multiple mails per line." This was my first reaction when I saw the change - I really hope they get this right as it goes to the core functionality of Thunderbird. If email addresses can't be easily and accurately edited in the To field, it will be a real problem for me.