Not that its a lot of help but seems the issues discovered with running the the windows 10 version on windows 11 got a lot of chatter this winter. I would suspect that Canon is probably working on it, but software testing can take time, I would think soon if they haven't released anything yet.. Unfortunately Windows 11 is probably not as massively used so the volume of people reporting it directly to them as a problem was probably very low.
Thanks johnsey, I will just have to be patient and put up with what Windows 11 offers at the moment. It's a shame I liked EOS 3 Launcher.