ID 359669 - The Colorspace knob will not update the Viewer when the OCIO file or environment variable is set in Studio/Hiero

Problem summary
The Colorspace knob will not update the Viewer when the OCIO file or environment variable is set in Studio/Hiero.

Customer reported version
hiero.12.0v1

Customer reported platform
centos7

Steps to reproduce

1) Launch Nuke Studio/Hiero and open Preferences... (Shift+S)

2) Set the OCIO knob to aces_1.0.3 and change the floating point file to any Raw lut.

3) Confirm the settings with OK.

4) Import a file and place it on the timeline to create a sequence.

5) Double click on the file to open the Properties, then change the ColorSpace knob.

6) Observe any changes made then save the project and close the application.

7) Relaunch Studio/Hiero and load the project.

8) Attempt to change the Colorspace knob of the clip on the timeline.

Alternatively:

1) Launch Nuke Studio/Hiero and open Preferences... (Shift+S)

2) Set the OCIO knob to aces_1.0.3, and confirm the settings with OK.

3) Import a file and place it on the timeline to create a sequence.

4) Run the following snippet in the Script Editor:

from hiero.core import *
import PyOpenColorIO as OCIO

config = OCIO.GetCurrentConfig()
defaultSpace = config.getColorSpace(OCIO.Constants.ROLE_DEFAULT)
ApplicationSettings().setValue('nukeUseOCIO', True)
ApplicationSettings().setValue('floatLut', defaultSpace.getName())

5) Double click on the clip to open the Properties, then change the ColorSpace knob.

6) Observe any changes made then save the project and close the application.

7) Relaunch Studio/Hiero and load the project.

8) Attempt to change the Colorspace knob of the clip on the timeline.

Expected behavior
The Viewer should match the applied Colorspace of the clip.

Actual behavior
The Viewer does not update to the applied Colorspace of the clip.

Workaround
There is no workaround available at this time.

Reproduced by Support in
Nuke Studio/Hiero 12.0v3 - Windows 10, CentOS 7, macOS 10.13

Nuke Studio/Hiero 12.0v1 - Windwos 10

Nuke Studio/Hiero 11.3v5 - Windows 10

Nuke Studio/Hiero 11.3v1 - Windows 10

Nuke Studio/Hiero 11.2v1 - Windows 10

Nuke Studio/Hiero 11.1v1 - Windows 10

Nuke Studio/Hiero 11.0v1 - Windows 10

Nuke Studio/Hiero 10.5v1 - Windows 10

Nuke Studio/Hiero 10.0v1 - Windows 10

Nuke Studio/Hiero  9.0v1 - Windows 10, CentOS 7, macOS 10.13

Earliest version tested

NukeStudio/Hiero 9.0v1 - This issue appears to be in all versions of the product