ID 280022 - Nodes with multiple Inputs display the wrong icon

Problem summary
 

Nodes with multiple inputs display as a Procedural layer in the Layers palette, when they should display as a NodeGraph layer. 

Customer reported version

3.3v1

Customer reported platform
windows7

Steps to reproduce

- Open Mari 3.3v1

- Open the Node Graph 

- Create a Node with 2+ inputs (i.e. a Group node containing 2 Input nodes)

- Hook it up to 2 Merge Nodes

- The Merge node downstream of the Group node will display the icon for a Procedural layer, when it should display a NodeGraph icon

Workaround
Unknown. 

Reproduced by support
3.3v1 - Windows 7, OSX, Centos6

Expected behaviour
Multiple input nodes should still show as a NodeGraph layer in the layers palette

Actual behaviour
Multiple input nodes displayed as a procedural layer, which is incorrect