ID 581199 - The UnrealReader's Picker knobs do not Add or Remove items from the Stencil Layer List

Problem summary:
The UnrealReader's Picker knobs do not Add or Remove items from the Layer List
 
Customer reported version:
NukeX Non-Commercial 15.1v1
 
Customer reported platform:
Windows 11
 
Steps to reproduce:
1) Open a Project in Unreal Engine, such as a new default virtual production project.
2) Ensure that the Nuke Server plugin is installed and actively running in Unreal Engine.
3) Open a Map in Unreal Engine, and create a Level Sequence with Shots if one does not already exist.
4) In NukeX create an UnrealReader node in the Node Graph.
5) Open the UnrealReader node's Properties and set the Map and Sequence knobs to load the Level Sequence from Unreal Engine.
6) Change the Render Mode from "full image" to "stencil layers".
7) Switch to the UnrealReader's Render tab, and enable the Preview Layers checkbox.
8) Use the Picker Add knob and Ctrl/Cmd + Left Mouse Button in the Viewer, observing how the Layer List does not update:

 
Expected behavior:
When using the Picker Add or Picker Remove knobs and Ctrl+Left Mouse Button in the Viewer, the UnrealReader node's Layer List should be updated based on the selection.
 
Actual behavior:
Adding layers to an UnrealReader's Layer List by selecting colors in the Viewer is not possible with the Picker Add knob. If a layer has already been added to the Layer List or is manually typed in, the Picker Remove knob is unable to remove the layer.
 
Workaround:
No known workaround at this time.
 
Reproduced by Support in:
NukeX 15.1v1 - Windows 10
NukeX 15.0v4 - Windows 10
NukeX 15.0v3 - Windows 10 - Regression
NukeX 14.1v4 - Windows 10
NukeX 14.1v3 - Windows 10 - Regression
 
Unable to reproduce bug in:
NukeX 15.0v2 - Windows 10
NukeX 14.1v2 - Windows 10
 
Earliest version tested:
NukeX 15.0v2/14.1v2 - This issue doesn't appear in this version and has regressed