A bug using texture map with Corona Sky object: Shader/ HDRI or Light Material.
I have a similar issue as Burnin. Mainly I am not seeing anything from the Corona Sky Object in the ViewPort. No Simple Color, Physical Sky, or HDRI. If I plug a HDRI into a Light Material it works but I don't have the advantages of a Sky Object.
IR or Renders are fine either way.
Windows 10
R22