ID 357554 - Color Management Enabled causes white values to clamp

Problem summary
Color Management enabled causes white values to clamp

Customer reported version

4.1v1

Customer reported platform
centos6

Steps to reproduce

1) Open Example head
2) In your Project Settings, enable Color Management
3) Paint a white value of 1/1/1
4) Bake
5) Open the color picker and use the eyedropper to read the colour you just painted

Result: The value is not 1/1/1

Workaround
There are multiple items to consider in order to workaround this issue:

1) Register a GPU accelerated colorspace transformation for this through the Mari API 
Q100362: Optimising your OCIO config for GPU Accelerated Color Management

2) Color Management disabled does not reproduce this issue.

3) Using the Eyedropper tool [C] does not seem to reproduce this issue

 

Reproduced by support
Mari 4.1v1 - Win 7, CentOS 7
Mari 4.0v4
Mari 3.4v1
Mari 3.3v1
Mari 3.2v1- Win 7, CentOS 7

Earliest version tested
Mari 3.1v3 - Last Working Version

Expected behaviour
When painting an RGB value of 1/1/1, the white value eyedropped should remain consistent

Actual behaviour
The eyedropped value varied around 0.987~ for each value