Same problem here. I have a compound USB device which has 3 USB interfaces. I configure the 3 interfaces with interface-number 3,4and5 respectively on device firmware. When connected with a macbook as a host, I enumerate all components of the device. Everything works fine until I updated to Mac os 13.3. I can still get 3 devices but get_int_property(dev, CFSTR(kUSBInterfaceNumber)) always return 0. Anyone got same issue with me and any ideas?