I see that it says that. But the fact still remains that it is possible to create a Transform that disagrees with itself. This test should never fail: func testTransform(A: Transform) { assert(A.rotation.angle == Transform(matrix: A.matrix).rotation.angle) } Something strange is going on internally with RealityKit's Transform. There must be redundancy in Transform's state that leads it to disagree with itself when passed an unnormalized quaternion.

Apple's own maps app has simultaneous drag and magnification