Merge pull request #9349 from Cameron-Micka/user/thmicka/fixShaderInspectorState

Re-enabling shader inspector for later properties.

Author: keveleigh

Assets/MRTK/Core/Inspectors/MixedRealityStandardShaderGUI.cs

@@ -713,6 +713,8 @@ protected void AdvancedOptions(MaterialEditor materialEditor, Material material)
 
             materialEditor.EnableInstancingField();
 
+            GUI.enabled = true;
+
             materialEditor.ShaderProperty(stencil, Styles.stencil);
 
             if (PropertyEnabled(stencil))