Here's the solution, via -> https://stackoverflow.com/questions/73422048/enable-undo-coredata-swiftui @Environment(\.undoManager) var undoManager // ... var body: some View { // ... .onAppear { viewContext.undoManager = undoManager } }

Anyone knows if it's fixed in Ventura?

Does not seem doable in SwiftUI as of macOS 12. Will see what's announced in the next WWDC.