I switched back to using Chrome about a month ago after years of using other browsers. My site search keywords from when I used it years ago are still in my settings and they work in terms of posting my queries to the website, but I don't get suggestions as I'm typing in the address bar. This has been going on since I switched back to Chrome. I look stuff up on Wikipedia all the time with the "wiki" keyword, but I have to type in the whole article name. I confirmed that I don't get suggestions for other keywords as well. I Googled for answers, but found outdated references to a "Use a prediction service" option that no longer exists (e.g., https://www.quora.com/My-search-bar-doesnt-show-predictive-search-I-am-using-Google-Chrome-Is-there-a-way-to-fix-it). I've attached screenshots of my site search settings. On the other hand, the search engine keywords, like bing.com, do provide suggestions.

https://preview.redd.it/txargkbdnmbe1.png?width=1051&format=png&auto=webp&s=eedd8e3bc15a3f378c261f2f7cb9f17f3fb3bfdb

https://preview.redd.it/k523spicnmbe1.png?width=864&format=png&auto=webp&s=71b66c2d8b72a17411cdc54dba78eeef0ca42095