I know there've been several discussions about this issue going back to 2020 (or even earlier) , but in this case it is a pristine environment:
Brand new Dell XPS 15 9520, Windows 11 Professional, nothing installed by me yet except Bitdefender Total Security.
No other browsers installed yet. Just Microsoft Edge.
And yes, I disabled QUIC.
Search Advisor icons do not appear in Bing searches. (But oddly, they do appear in Google searches).
No other security suite installed (the first thing I do when I get a new PC is uninstall the McAfee suite that comes with it). All drivers, firmware, OS, software, Edge, and of course Bitdefender Total Security fully up to date with latest versions. Fresh install.