- Open in Firefox, in a new tab, 
- DON'T prompt me, just do it, and 
- DON'T download it, unless if I then want to keep it I click the download [Fx98PDFviewer-DownloadButton] button.

I have read hours of Q&A about this problem here in this forum before posting, and cannot find a solution. Until very recently, whenever I would click a link in a page, it would "Open in Firefox" in a new tab. Then after reading it or printing it or whatever I wanted to do, I could click the download [Fx98PDFviewer-DownloadButton] button if I wanted to save it, and an Explorer would open up allowing me to select where I want to put it and what I want to call it (if I wanted to change the name it comes with) before downloading/saving. Now, when I click a link it just downloads (even though most of the time I don't want that). Despite all I've read, I've tried a dozen settings, and I CANNOT get that behavior back. If I set the browser.download.improvements_to_download_panel to False, and select "Open with Firefox" when it prompts me, I can't get it to STOP prompting me. It prompts me EVERY TIME, even though I have checked the box repeatedly for "Do this automatically for files like this from now on" And yet it is STILL downloading automatically when it opens for viewing in the new tab, and I am forever now cleaning and deleting crap out of my downloads. I have my default PDF reader set to the reader I like, and when I'm NOT in Firefox, I do NOT want to have to right-click and select my preferred reader each time. But when I AM IN FIREFOX, what I need it to do is - Open in Firefox, in a new tab, - DON'T prompt me, just do it, and - DON'T download it, unless if I then want to keep it I click the download [Fx98PDFviewer-DownloadButton] button. HOW CAN I GET IT THIS BEHAVIOR BACK PLEASE?