Seems after reinstalling Ubuntu and Thunderbird the problem has gone. It was a profile issue
** Changed in: thunderbird (Ubuntu) Status: New => Invalid -- Thunderbird does not honor the "start reply below quote" https://bugs.launchpad.net/bugs/564738 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs