Rated 4 out of 5 stars
Any idea why in Thunderbird 68.12.0 (on Windows), the HTML tab is displayed with yellow characters on yellow background ?
That being said I could edit it after transfering it in the notepad, but it could be more handy.
Looks like you have some sort of theme or modification to userChrome.css. Reviews are not for bug reports, please contact me directly using the support e-mail.