How to reproduce:
- Create node Material
- Create two materials
- Choose the first material in material node and set some value for "DiffuseIntensity"
- Choose another material in material node and set another value for "DiffuseIntensity"
- Ctrl+H on material node
- Try to access default value with Python:
- Switch material and try the previous step, you will see the same result because the value was not updated
The same bug is reproduced in attached file in Extended Material node.
Alexander (Blend4Web Team)