Notes search not working on one of two user accounts

I am using Notes on my iPhone 13 iOS 17.6.1 and on my MBP Mid 2019 running Sequoia 15.0.1.

I could always search a for a keyword in Notes before the upgrade to Sequoia but now I cannot, in the user account on my Mac that I use daily. I logged into a secondary test account on my Mac and into my Apple account on that account as well (same Apple ID), and in the test account, I *can* perform a search successfully in Notes.

How can I fix it on my main user account?