At seamonkey-project.org, the intro says "Under the hood, SeaMonkey uses much of the same Mozilla source code which powers such successful siblings as Firefox, Thunderbird, Camino, Sunbird and Miro."
So unless they forked development of the email client code, a first guess would be that you share this bug. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to thunderbird in Ubuntu. https://bugs.launchpad.net/bugs/584632 Title: composer changes font mid email Status in Mozilla Thunderbird Mail and News: Confirmed Status in “thunderbird” package in Ubuntu: Confirmed Bug description: Binary package hint: thunderbird As I'm typing my emails in Thunderbird, I can see what appears to be a font size change on screen, normally in the second line of text. The second line appear smaller than the first. It's barely perceptible, so half them time I think I am imagining it. Well, I've started Bccing to myself to check, and the emails I am receiving from myself are not only a different size, they're also a different font. Composer starts in some default serif, and by the second line is sans. I'd bee glad to email someone viz thunderbird, and also send along a screenshot of how it looks while I am typing. Thanks. To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/584632/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

