ID 473043 - Setting colorspace roles in Nuke Studio/Hiero results in Invalid LUT selected error

Problem summary
Setting colorspace roles in Nuke Studio/Hiero results in Invalid LUT selected error

This happens with aces_1.1 and nuke-default ocio configs, and disabling Prioritize OCIO roles* in the preferences makes no difference.

This only affects setting colorspaces which are role base from the clip bin or timeline time, and doesn't affect setting them directly on the Read node, so doesn't affect standard Nuke.

Customer reported version
nuke.13.0v1

Customer reported platform
windows10

Steps to reproduce

1) Open Nuke Studio/Hiero
2) Import any footage
3) Right click on the footage in the bin > Set Media Color Transform>pick any role colorspace which is not the default value

4) Open the clip in the Viewer, or add it to the timeline, the Viewer will display an Invalid LUT selected error

Expected behaviour
For the colorspace/LUT to be applied

Actual behaviour
It errors saying invalid LUT, for a LUT which is in the colorspace list. It also appends the colorspace it can't find to the end of the list:

Workaround
If you open the properties panel and set the the colorspace role from there on each clip it works.

Also if you set a non-role colorspace, then they get applied without issue.

Reproduced by support
This bug has been reproduced in:

Nuke Studio/Hiero 13.0v1 - Windows 10, Centos 7 - regression

Unable to reproduce bug in:
Nuke Studio/Hiero 12.2v6 - Windows 10, Centos 7

Earliest version tested
Nuke Studio/Hiero 12.2v6 - This issue doesn't appear in this version and has regressed