ID 380291 - The video track below receives the Colorspace soft effect from the track above when blending layers.

Problem summary:
The track below receives the ColorSpace soft effect from the track above when blending layers.

This also occurs when using the CDL soft effect.

Customer reported version:
nuke.11.2v4

Customer reported platform:

Steps to reproduce:

1) From Nuke, import footage and place it in a Sequence on Track 1.

2) Right-click the track item and select Effects >Colorspace

3) Create a Transform soft effect to place the track item in a 2x2 contact sheet style.

4) Repeat steps 2&3 for 3 more video tracks.

5) Set the OCIOColorSpace for each video item to be different from one another.

6) Enable the Blending for all video layers.

7) Starting with the top video track item, change the OCIOColorSpace for "in" to Cineon and observe the changes in the Viewer.

Workaround:
Enabling the mask blend by alpha option seems to relieve the issue with other tracks being affected by the OCIOColorSpace.

Reproduced by Support in:

Nuke 11.3v1 - Windows 10, CentOS 7, macOS 10.13 High

Nuke 11.2v1 - Windows 10

Nuke 11.1v1 - Windows 10

Nuke 11.0v1 - Windows 10

Nuke 10.5v1 - Windows 10

Nuke 10.0v1 - Windows 10

Nuke 9.0v9 - Windows 10, CentOS 7, macOS 10.13 High

Unable to reproduce bug in:
NukeStudio 9.0v1

Earliest version tested:
NukeStudio 9.0v9 - This feature did not exist before this version

Expected behavior:
The OCIOColorSpace soft effect should only apply to the track item the effect is placed on.

Actual behavior:
The OCIOColorSpace soft effect is applied to other Tracks below when the Track Blend is enabled.