I searched for "bing" on https://openai.com/index/introducing-deep-research/ and it found a false positive at the marked position.

I am not sure whether this is WebKit related or a browser issue.
There is no "bing" there, so it shouldn't add an entry there.
Version 0.99.133.1-rc (WebKit 622.1.9.19.2)
Sequoia (15)