Custom Depth Stencil works but the value not masked by Custom Depth Stencil Write Mask.
On IOS preview the value is 255, so the sigt is dark and poison feild full screen.
On PC the sight value masked first bit is 1, the poison field value masked second bit is 2, the overlap area is 3
this is the second render bug on mobile, will next verison fix them or wish fixed them?