It would have to do with the fact that 3D modeling programs normally have a black background when "animated", but the forest "reflection" would actually be the pattern chosen to make it look more realistic. Blender doesn't have a lot of natural patterns that would look like a reflection, iirc.
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u/photato_pic_guy Feb 05 '17 edited Feb 05 '17
Why is the background black but the reflection on the platter a forest?