User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0
Steps to reproduce:
Prior to Firefox 78.0.2, I had configured Firefox to "Always Ask" for PDF content-types. This worked the way I want it: When I clicked on a link that serves a PDF I was presented with a choice between opening in an external application (most common) or saving the PDF somewhere specific instead. Opening in an external document viewer was the default, which is fine.
When Firefox upgraded to 78.0.2, it decided it knew better and changed the preference to "Open in Firefox" for PDFs. That was mildly annoying. I didn't want PDFs rendering in Firefox, so I found the setting and changed it back again.
So far so good.
Now when I follow a link that serves a PDF document, Firefox opens a dialog that has three options:
- Always selected by default! Open with Firefox
- Open with: Document Viewer (default)
- Save File
[ ] Do this automatically for files like this from now on.
Firefox should NOT have defaulted to "Open with Firefox".
The whole reason why I changed my preference away from "Open in Firefox" is because I DON'T want it to open in Firefox. Hence this is a silly default which is forcing me to constantly fight against Firefox, switching away from that option every time. Except I often forget that the behaviour has changed and now I am accidentally opening documents in Firefox when I intended to open them in an external document viewer.
Acceptable alternatives would have been:
a. to default to the option for opening in a document viewer (the previous behaviour), or
b. to default to whatever I actually chose last time (assuming there was a last time) .
I prefer option a). However, there is a small possibility that some people would like to choose between opening in Firefox and saving the document, and there may be some people who almost always want to save, but occasionally want to do something different, and for those people, b) would be a better choice.