Thanks Sean! That’s great, it certainly allows me to keep moving with the course.
So I have tested everything… updated my OS, drivers, uninstalled and reinstalled Blender. None of it did the trick.
Then I tested on an older version of Blender (4.1) and it worked. So I don’t think it has to do with the OS.
Either way, very odd, but I can continue with Sean’s tricks.
Thanks everyone for trying to figure it out!