In the world of scene releases, a "PROPER" is issued when the original release (often called the "NUKED" release) violated specific technical standards. Common Reasons for this PROPER Report
: The Atmos track may have drifted out of sync with the video in the original version.
: The initial 2160p (4K) encode might have had visible "macroblocking" or artifacts in dark scenes, which are frequent in Emancipation due to its high-contrast, desaturated visual style.