How do I remove Microsoft rewards “cash back” snippets from search results in bing.com in Firefox browser?

When using the Firefox browser (not Microsoft Edge), when I search on bing.com I see these little “Up to 2% cash back” prefixes to, or tags on, several search results. This is on Windows 10 22H2.

When I click on the “cash back,” it pops up a “Microsoft Rewards” window.

How do I turn these off?

I looked at about 500 web search results on this topic and here are some clarifications to keep your potential answers away from those ideas:

  • I have never used the Microsoft Edge browser on this computer.
  • I do not have a Microsoft Account.
  • I do not have any “bing” programs installed as listed in “Add or remove programs.”
  • Firefox does not have any “Bing” extensions installed.
  • I have uBlock origin (the original) installed and functioning (even on bing.com it shows it blocked things).
  • I have never used Microsoft Rewards and so I do not have any credits or balance.
  • I just did a scan with Malwarebytes Anti-Malware and AdwCleaner and both were clean.

Here’s what the snippet/prefix/tag looks like:

bing.com cash back tag in firefox

And here’s what comes up when you click on it:

microsoft rewards bing.com popup in firefox

Clicking on the “Join now” link takes you to first bing.com and eventually live.com.

UPDATE: prompted by @FrankThomas’s comment, I used “element picker mode” of uBlock Origin and was able to filter it. The filter created was:

www.bing.com##.rebateAcfContainer

(It originally had an additional .clearfix which proved not necessary to block.