(In reply to doug2 from comment #2) > No, it does not open from the right click Open menu. Option apparently defaults to "Preview in Thunderbird" which didn't work. > Option should default to system action for file type. (Why did TBird need its own .pdf viewer?) (portable document format -duh) I did not ask that. Does it open with One click on "Open" when clicking with the "Left" mouse button? Sorry I wasn't precise. Also works if I just left-click once on the file name. PDF Viewer is in Thunderbird because a bug filed 8 years ago to integrate pdf.js was fixed.
Bug 1663033 Comment 5 Edit History
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(In reply to doug2 from comment #2) > No, it does not open from the right click Open menu. Option apparently defaults to "Preview in Thunderbird" which didn't work. > Option should default to system action for file type. (Why did TBird need its own .pdf viewer?) (portable document format -duh) I did not ask that. Does it open with One click on "Open" when clicking with the "Left" mouse button? Sorry I wasn't precise. Also works if I just left-click once on the file name. Also works in my beta on Windows10 just clicking the filename. I'm a Linux user though. PDF Viewer is in Thunderbird because a bug filed 8 years ago to integrate pdf.js was fixed.