Thunderbird is displaying some emails incorrectly. In some cases I see a screenful of HTML code and not the message. A message list will show empty headers. In other cases, I get the wrong content to a message. This happens on three different PC's - two Macs and one Windows PC. The Macs are running TB 68 and the PC is on 78. I have deleted the profile and created a new one on each system and the problem still persists. Airmail on the Mac and webmail do not have any problems with the same messages.