The file is not-openable and, even if it were, it's not locally available (and I suppose that the expected behaviour is to have the file available even off-line).
If TB is the new "default" MUA for Ubuntu, I think that *this* bug shuold be solved. I am available to test.
Ok, tested, it's even worst now. If I drag and drop an attachment, I have a .desktop file created with the following content:
[Desktop Entry] :143/fetch% 3EUID%3E. INBOX%3E361? part=1. 2&filename= ODT%20Document. odt
Encoding=UTF-8
Name=Link to ODT Document.odt
Type=Link
URL=imap://<email address hidden>
Icon=text-html
The file is not-openable and, even if it were, it's not locally available (and I suppose that the expected behaviour is to have the file available even off-line).
If TB is the new "default" MUA for Ubuntu, I think that *this* bug shuold be solved. I am available to test.