ID 418929 - Modo deletes a selected group in the Shader Tree when deleting an item from the Items List.

Problem summary
Modo deletes a selected group in the Shader Tree when deleting an item from the Items List.

Customer reported version
modo.13.2v1

Customer reported platform
10.14

Steps to reproduce

1) Open Modo.

2) Create a mesh layer in the item list

3) Create a material mask for it by pressing the 'M' key in the 3d viewport.

4) Leave the default values and select 'OK'.

5) Make sure there are other mesh layers in the scene (otherwise you wont be able to delete the one)

6) Make sure nothing is selected, neither in the item list, nor in the shader tree

7)  Select the created group in the shader tree

8) Switch back to the item list, right click in the mesh layer and choose "Delete"

9) Notice that both the item in the item list and the group in the shader tree are deleted.

Expected behaviour
Only the item should be deleted and not the group in the shader tree.

Actual behaviour

Both the item and the group in the shader tree are deleted.

Workaround
Unknown. 

Reproduced by support

This bug has been reproduced in:
13.2v1 - Windows 10, Centos 7, Mac OS 10.13

13.1v1 - Windows 10

13.0v1 - Windows 10

12.2v2 - Windows 10

12.1v2 - Windows 10

12.0v1 - Windows 10

11.2v3 - Windows 10

11.1v1 - Windows 10

11.0v3 - Windows 10

10.2v4 - Windows 10, Centos 7, MacOS 10.13

Earliest version tested

10.2v4 - This issue appears to be in all versions of the product.