Thanks for your reply. The feedback ID is FB21579636 Yes, I've tried overriding hitTest and in fact noticed that the mouse events simply pass through some swiftUI controls like swiftUI buttons. Using AppKit controls instead fixes the issue, but is not convenient.

Thanks, but if you look at the demo code in my post: https://stackoverflow.com/questions/79862332/nshostingview-with-swiftui-gestures-not-receiving-mouse-events-behind-another-ns, I tried logging the hit tests for both the top and middle NSHostingViews. The logs confirm that clicks are reaching both views, but the middle layer’s button with the DragGesture still doesn’t respond. Do you know how your solution could be used here?