User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en) AppleWebKit/419 (KHTML, like Gecko) Safari/419.3 Build Identifier: Both Thunderbird 1.5.x.x and 126.96.36.199 We right click on an .html attachment and ask Thunderbird to open the attachment with Firefox. When Firefox opens the attachment it displays as raw text instead of interpreted HTML and the URL in firefox shows the file name ending with ".html.txt" If the attachment is instead saved to the desktop by Thunderbird, it gets saved correctly as a .html file and when double clicked, opens firefox and displays correctly as a richly formatted HTML document. Reproducible: Always Steps to Reproduce: 1. Right click on any .html attachment in your inbox and choose open 2. Choose to open with Firefox, it opens incorrectly. 3. There is no step 3 Actual Results: The document opens as raw, uninterpreted html text and the URL line has the path to the document that ends with ".html.txt" Expected Results: We would expect the .html document to open in a web browser (any web browser, including Firefox) and be interpreted and displayed as HTML not as TXT.
WFM on Linux 188.8.131.52pre using the message with Message ID <email@example.com> on the WHATWG mailing list (from Dave Singer, subject is re-thinking "cue ranges", from May 22, 2008 if you want to find it yourself).
WFM here on Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:184.108.40.206pre) Gecko/20090825 Lightning/1.0pre Shredder/3.0b4pre ID:20090825144257 Seymour could you try to see if it still happens with http://ftp.mozilla.org/pub/mozilla.org/thunderbird/nightly/latest-comm-1.9.1/ ?
WFM per comment #1 and comment #2 Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:220.127.116.11pre) Gecko/20090921 Lightning/1.0pre Shredder/3.0pre ID:20090921031228