If I understand correctly #openInSceneView wraps a morph in an Athens scene. I tried some examples:
"Smalltalk ui icons configIcon asMorph openInSceneView" "BorderedMorph new openInSceneView" First two work, but the third: "EllipseMorph new openInSceneView" brought up a yellow morph - but as rectangle not as ellipse like in "EllipseMorph new openInWorld". Havent looked deeper. Incomplete or a bug? Thx T.