Chris Burnat: Yes, issue clarified. The next time please add a comment or better if you can notify the author.
Jonathan Martens: Based in my reply:
No no no...this is not a bug. This is the default configuration. Look into imp/config/mime_drivers.php and change to true show html inline. When you found it, do the same but with templates.
How you suppose this reply is on a wrong thread?
You have a very fast clicking finger.