CoronaAO exlude bug

[Tengiz]

Hello!
There is a problem with using CoronaAO + exlude object list.
A screenshot and Scene, where the bug is seen clearly, are attached.

This bug makes troubles in using AO. For example, I use AO material on the road, but the difference in hight of borders generates different length of AO. What causes such a strange thing? I exclude geometry of the borders that are higher, but it doesn't help to solve this problem because of this bug.

P.S. I use Corona 7.1

[Ondra]

Fixed