Thank you for this kind of information. I have been pulling my hair out for years working with usbC hubs and monitor problems. There are bugs all the way up and down the stack: windows, the hub, the monitor itself. It seems there is fairly sparse testing of external monitors with windows for sure.
I have used external monitors for decades with Windows and I have not run into problems. One thing which may help is I always plug the monitors into the video card. I typically use an NVIDIA professional video card. I have also not had problems with laptops plugged into external monitors.
Yeah, it's interesting to see some of these bugs, and the duplicate serials makes a lot of sense.
However my Linux laptop can handle multiple dongle attached screens without getting confused for layouts that my Mac gets confused about. I wonder what it's doing differently?