Problem summary
The Preview Renderer does not render Material Tag Operators as expected.
Customer reported version
Modo 16.1v6
Customer reported platform
Windows 11
Steps to reproduce
1) Download the attached scene and open it in Modo.
2) In the Items Viewport, expand the Sphere item and select the Material Tag operator that is attached to it.
3) Navigate to Render > Open Preview and press the play button.
4) In the Properties tab, change the tag from "Blue" to "Red", then back to "Blue" and close the Preview Renderer.
5) Reopen the Preview Renderer and change the tag to "Red" and observe the results.
Expected behavior
The materials should show up in the Preview Renderer when changed with Material Tags.
Actual behavior
The materials do not show up in the Preview Renderer when changed with Material Tags.
Workaround
On an affected Material group, enable then disable the "Apply to Sub-Group" option. However, if the Preview Renderer is closed and reopened, this method will need to be done again.
Reproduced by Support in:
Modo 16.1v7 - Windows 11, macOS 11.7 Big Sur
Modo 15.0v1 - Widows 11, macOS 11.7 Big Sur
Earliest version tested
Modo 15.0v1 - This issue appears to be in all tested versions of the product.
