User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:53.0) Gecko/20100101 Firefox/53.0 Build ID: 20170418123315 Steps to reproduce: I wanted to look at the - not attached - PDF in the message received. It is shown in the attachments pane of the display window. Actual results: When clicked on the attachment, the PDF gets written to temp, but it will not be decoded, so the pdf-viewer fails. Same when doing "Save attached file" to some location. Expected results: The PDF content should be decoded before writing to temp/file system. This works in 45 but fails in 52.

This Bug 701261 looks related, but it is old (and the description is very wordy). The difference is also: I see the binary in the attachments pane, it is only saved wrongly.

(In reply to Hungerburg from comment #0) > Created attachment 8865093 [details] > Message that is constructed like the original one, which was sent from a SAP > user. | Content-Type: application/pdf; name="Test.pdf" | Content-Transfer-Encoding: base64 This is a Dupe of Bug 1361422 It is already fixed on trunk and beta TB. Release TB will follow - I think. Attachment 8865093 [details] works for me on trunk TB.