ID 427776 - NetworkMaterialCreate: Shader parameters named Parameters do not expand

Problem summary
Shader Args Files that contain a page named ‘Parameters’ create a ‘Parameters’ parameter group in the renderer-specific ShadingNode. However, in the NetworkMaterialCreate context, the shader parameters named ‘Parameters’ do not expand.

Customer reported version
katana.3.5v1

Customer reported platform
centos7

Steps to reproduce

1. 1. Edit RenderManProServer-22.7/lib/plugins/Args/PxrBump.args
   Line 31: <page name="Pattern" open="True">
   to
   Line 31: <page name="Parameters" open="True"> 

2. 2. Start Katana with the RenderManForKatana plugin.
   

3. 3. Create a NetworkMaterialCreate node.

4. 4. Inside the NetworkMaterialCreate context, create a PxrBump shading node.

Expected behavior
User can expand the second Parameters drop-down.

Actual behavior
The second Parameters drop-down cannot be expanded.

Workaround
Rename the shader Args file page name to something other than ‘Parameters’.

Reproduced by support
This bug has been reproduced in:
Katana 3.5v2 - CentOS 7, Windows 10
Katana 3.5v1 - CentOS 7, Windows 10
Katana 3.2v4 - CentOS 7, Windows 10
Katana 3.2v1 - CentOS 7, Windows 10

Earliest version tested
Katana 3.2v1 - NetworkMaterialCreate feature did not exist before this version