

 Before:

(GraphicsLayer
  (anchor 0.00 0.00)
  (bounds 800.00 600.00)
  (children 1
    (GraphicsLayer
      (bounds 800.00 600.00)
      (contentsOpaque 1)
      (children 4
        (GraphicsLayer
          (position 8.00 213.00)
          (bounds 50.00 50.00)
          (event region
            (rect (0,0) width=50 height=50)
          )
          (children 1
            (GraphicsLayer
              (bounds 50.00 50.00)
              (event region
                (rect (0,0) width=50 height=50)
              )
              (children 1
                (GraphicsLayer
                  (anchor 0.00 0.00)
                  (bounds 50.00 100.00)
                  (event region
                    (rect (0,0) width=50 height=100)
                  )
                )
              )
            )
          )
        )
        (GraphicsLayer
          (position 8.00 8.00)
          (bounds 200.00 200.00)
          (drawsContent 1)
        )
        (GraphicsLayer
          (position 212.00 8.00)
          (bounds 202.00 202.00)
          (drawsContent 1)
        )
        (GraphicsLayer
          (position 416.00 8.00)
          (bounds 202.00 202.00)
          (drawsContent 1)
        )
      )
    )
  )
)
After setting 'pointer-events:auto':

(GraphicsLayer
  (anchor 0.00 0.00)
  (bounds 800.00 1059.00)
  (children 1
    (GraphicsLayer
      (bounds 800.00 1059.00)
      (contentsOpaque 1)
      (children 4
        (GraphicsLayer
          (position 8.00 213.00)
          (bounds 50.00 50.00)
          (event region
            (rect (0,0) width=50 height=50)
          )
          (children 1
            (GraphicsLayer
              (bounds 50.00 50.00)
              (event region
                (rect (0,0) width=50 height=50)
              )
              (children 1
                (GraphicsLayer
                  (anchor 0.00 0.00)
                  (bounds 50.00 100.00)
                  (event region
                    (rect (0,0) width=50 height=100)
                  )
                )
              )
            )
          )
        )
        (GraphicsLayer
          (position 8.00 8.00)
          (bounds 200.00 200.00)
          (drawsContent 1)
          (event region
            (rect (0,0) width=200 height=200)
          )
        )
        (GraphicsLayer
          (position 212.00 8.00)
          (bounds 202.00 202.00)
          (drawsContent 1)
          (event region
            (rect (2,2) width=200 height=200)
          )
        )
        (GraphicsLayer
          (position 416.00 8.00)
          (bounds 202.00 202.00)
          (drawsContent 1)
          (event region
            (rect (2,2) width=200 height=200)
          )
        )
      )
    )
  )
)
After setting 'pointer-events:none':

(GraphicsLayer
  (anchor 0.00 0.00)
  (bounds 800.00 1927.00)
  (children 1
    (GraphicsLayer
      (bounds 800.00 1927.00)
      (contentsOpaque 1)
      (children 4
        (GraphicsLayer
          (position 8.00 213.00)
          (bounds 50.00 50.00)
          (event region
            (rect (0,0) width=50 height=50)
          )
          (children 1
            (GraphicsLayer
              (bounds 50.00 50.00)
              (event region
                (rect (0,0) width=50 height=50)
              )
              (children 1
                (GraphicsLayer
                  (anchor 0.00 0.00)
                  (bounds 50.00 100.00)
                  (event region
                    (rect (0,0) width=50 height=100)
                  )
                )
              )
            )
          )
        )
        (GraphicsLayer
          (position 8.00 8.00)
          (bounds 200.00 200.00)
          (drawsContent 1)
        )
        (GraphicsLayer
          (position 212.00 8.00)
          (bounds 202.00 202.00)
          (drawsContent 1)
        )
        (GraphicsLayer
          (position 416.00 8.00)
          (bounds 202.00 202.00)
          (drawsContent 1)
        )
      )
    )
  )
)