I used to be able to edit the html for an email message as I would write it, but after one of the latest revisions of Thunderbird, the html tab went away.

At the same time, T'bird has started changing my font after I write the first couple lines of my message. With the html tab, I'd just go into that tab and edit the code, but now I no longer have that option.

Is there some way to access the html code as I write a message?