The reflected Sky material looks blurry and low res when set to unlit, however setting the material to Default Lit has the correct reflection. Even though the reflection is correct the lighting breaks for other objects in the scene.
Found in 4.22 CL# 5275346 and 4.23 CL# 5287285
The reflection will look like image #1 in Unlit and #2 in Default lit
Light source should render properly both illumination and shadows
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-71054 in the post.