In the viewport frame they appear rotated the remapping fixed the rotation of the skybox faces I never tested if the objects reflect the correct face on the correct side and I used the studio camera as the current camera in the viewport frame to test it so it isn’t a camera thing. lemme show you what I am on about and it is in your image so I will just use your example with some markings to show what I am on about:
EDIT: Sorry for the late reply.