I've found the problem. I have poor eyesight, and have my minimum font size is set to 15 points. However, the font for monospace for the latin character set was set to "Default (DejaVu Sans Mono)" 12 point. Upon changing this to 15 point to match my minimum font size, the text wraps at 72 characters as it should. It seems that the font scaling doesn't correctly handle differences between the chosen font and minimum font size.
HTML composition seems to be unaffected. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1850803 Title: Wrong wrap length when composing emails To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/1850803/+subscriptions -- ubuntu-bugs mailing list email@example.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs