ID 403349 - Surface ID render outputs can give different objects the same colour ID

Problem summary
Surface ID render outputs can give different objects the same colour ID

Customer reported version
modo.n/a

Customer reported platform
windows10

Steps to reproduce

1) Download and open the attached scene.

2) Press F9 to open the Render window and change the Output to Surface ID Output.

3) Notice how it's assigned the same colour ID to overlapping items within the scene.

Expected behaviour
Every Item should have a different colour ID assigned to it.

Actual behaviour
Overlapping items are sharing the same colour ID.

Workaround
Unknown.

Reproduced by support

This bug has been reproduced in:
13.1v1 - Windows 10 - Centos 7 - MacOS 10.13

13.0v1 - Windows 10

12.2v2 - Windows 10

12.1v2 - Windows 10

12.0v1 - Windows 10

11.2v3 - Windows 10

11.2v1 - Windows 10 - Centos 7 - MacOS 10.13 -regression

Unable to reproduce bug in:
11.1v1 - Windows 10 - Centos 7 - MacOS 10.13

Earliest version tested

11.1v1 - This issue no longer appears in this version and has regressed.