MatterExtension with class MatterAddDeviceExtensionRequestHandler never called?!

Added the MatterExtension for MatterAddDeviceExtensionRequestHandler as new Target. Everything is automatically generated.

But still only the default MatterAddDevice pickerView is displayed instead of MatterAddDeviceExtension?!

func play() {
    
    Task {
        let homes = [MatterAddDeviceRequest.Home(displayName: "my Home")]
        let topology = MatterAddDeviceRequest.Topology(ecosystemName: "MyEcosystemName", homes: homes)
        
        let request = MatterAddDeviceRequest(topology: topology)
        
        do {
            try await request.perform()
            print("Successfully set up device!")
        } catch {
            print("Failed to set up device with error: \(error)")
        }
    }
}

Entitlements: Matter Allow Setup Payload = YES

.plist is set up:

• NSLocalNetworkUsageDescription
• NSBonjourServices:

<array> <string>_matter._tcp</string> <string>_matterc._udp</string> <string>_matterd._udp</string> </array> </plist>