SVN 675 - HTML attachment -> application/octet-stream after movement

[Florianer]

Hi,
I found a problem with attachments. The mail in the inbox has an attachment type HTML. Opening no problem. I moved this mail into my officials folder and now I am not able to open the attachment any more. I get a download dialog asking me how to handle the attachment type application/octet-stream. Moving this mail back into the inbox, I can open the attachment again.