I looked at a Print Preview for a message. All was well and I printed. Then, closing the message and going to reading another, that old Preview showed up, taking up half my TB message window. Then, reading another message, same symptom. Then, tried to Write someone, same symptom, same Print Preview from my original request. Finally, quitting and restarting TB got rid of the problem, NICE!

I know about the Config Editor (as of today) but don't know if I can do anything with that to AVOID this happening again.