Using FocusedValues in UtilityWindow as described in the documentation isn't working for me either in macOS 26.0.1. Outside of the SwiftUI documentation, I can't find any information anywhere about actually using FocusedValues in a UtilityWindow, not even example code. Your comment is the only content I've been able to find, and you're having the same issue I am. If anyone coming in from a search engine has any insight into getting this to work, please share it!