Note: I am using 4.1
At around the 6 min mark, he rotates the background so that light will bounce off the console differently. I have all my nodes exactly as he does but when I adjust the rotation in the mapping node, nothing changes.

The only difference that I noticed is that the HDR node has some different options with the alpha and color space. I’ve tried each one and still the background does not rotate. I don’t believe these make a different in terms of rotation.

As a workaround, I rotated my objects to get the light position right. I would like to know if I am missing anything, configured something wrong earlier, or if this is a bug with 4.1.
Thank you,
BuddyBoi