ID 515084 - Node Indicators for channels display inconsistently

Problem summary
Node Indicators for channels display inconsistently.

Customer reported version
Nuke 13.2v2

Customer reported platform
Windows 10

Steps to reproduce

1) Open Nuke.

2) Create a CheckerBoard.

3) Downstream of the CheckerBoard, create a Shuffle node.

4) In the Shuffle properties, disconnect then reconnect each of the inputs.

Expected behaviour
Node Indicators for channels should accurately display which channels are being processed or passed through.

Actual behaviour
Node Indicators for channels display inconsistently.

Workaround
Pressing the 1 key (or the corresponding key for the current Viewer input) to reattach the script to the current node seems to force an update of the Node Indicators.

Reproduced by support
This bug has been reproduced in:

Nuke 13.2v3 - Windows 10 - Linux CentOS 7 - macOS 10.15 (Catalina)

Nuke 12.0v1 - Windows 10 - Linux CentOS 7 - macOS 10.15 (Catalina)

Nuke 9.0v1 - Windows 10

Earliest version tested
Nuke 9.0v1
- This issue appears to be in all tested versions of the product