ID 483586 - Clear Coat output past 100% has no effect unless constant layer is added.

Problem summary
Clear Coat output past 100% has no effect unless constant layer is added.

Customer reported version
modo.15.1v1 Beta

Customer reported platform
windows10

Steps to reproduce

1) Launch Modo, open and start Preview

2) load the attached scene

3) in the Shader Tree, expand the ball group

4) initially only the lowest material is enabled and set to Clearcoat:0, notice the preview render

5) enable the Material cc100 and notice the affect of 100% clearcoat

6) enable the Constant layer (set to Clearcoat Amount effect, value = 200%) and notice the clearcoat affect increases

7) disable the Constant layer and try to adjust the Clearcoat Amount on the Material cc100 to higher levels: it has no effect.

Expected behaviour
Clear coat increase should cause a visible change to the material.

Actual behaviour
No change occurs.

Workaround
Create constant layer to increase the clear coat amount above 100%.

Logged at Developers request.