Just found this article randomly after reading a totally different article, and I have the same issue, same phenomena. I wrote about it recently, and I still don't know the answer. https://thejollyteapot.com/2022/10/28/something-is-rotten-in-the-state-of-bing-search Good to know that this is a pretty common mystery. Hopefully Bing will notice and fix it.
Nicolas