ID 496155 - When Material is placed above Normal Map in the Shader Tree the Normal Map continues to appear in the Advanced Viewport.

Problem summary
When Material is placed above Normal Map in the Shader Tree the Normal Map continues to appear in the Advanced Viewport.

Customer reported version
modo.15.2v1

Customer reported platform
windows10

Steps to reproduce

1) Launch Modo 15.2v1

2) Load attached scene.

3) Note that in the Shader Tree Material is placed above the Normal Map image.

4) Press F8 for Render Preview. Notice that the Normal Map doesn't appear as expected.

5) Change the Viewport from 'Default' to 'Advanced' Notice the normal map appears incorrectly.

Expected behaviour
The Normal Map should not be visible.

Actual behaviour
The Normal Map is visible in the Advanced Viewport.

Workaround
Unknown. 

Reproduced by support
This bug has been reproduced in:
15.2v1 - Windows 10 

15.1v1 - Windows 10
15.0v1 - Windows 10
14.2v1 - Windows 10
14.1v1 - Windows 10
14.0v1 - Windows 10
13.0v1 - Windows 10
12.2v2 - Windows 10

Earliest version tested
12.2v2 - This issue appears to be in all versions of the product.