How to fix non-functional calendar search on iPhone 16 Pro with iOS 26.1?

The search function in calendar is not working in my 16 pro with IOS 26.1. Two weeks I agoni spent two hours on the phone with Apple care with no resolution. This is a something I use regularly and I find this glitch most annoying. In addition I maintain Apple Care on all my Apple products. For this hefty fee I expect Apple Care to fix this issue with an an IOS upgrade or by some other means. Counting on you Apple!

[Re-Titled by Moderator]