When the clip-path is applied on the parent of a composited layer, the clipping is not applied on the child.
Created attachment 164888 [details] Test case
*** Bug 97695 has been marked as a duplicate of this bug. ***
*** Bug 136422 has been marked as a duplicate of this bug. ***
<rdar://problem/18196436>
Created attachment 330664 [details] Updated test case
This works now (see new test case).