ID 599860 - Splines created with "Duplicate and join" do not always update the SplineWarp preview in the Viewer

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Problem summary
Splines created with "Duplicate and join" do not always update the SplineWarp preview in the Viewer.
 
Customer reported version
Nuke 16.0v2
 
Customer reported platform
Rocky 9
 
Steps to reproduce
 
1) Open Nuke.
 
2) Create a CheckerBoard node.
 
3) Then create a SplineWarp, downstream of the CheckerBoard.
 
4) Draw a bezier shape in the Viewer.
 
5) In the Properties panel, right-click Bezier1 and select Duplicate and join.
 
6) With Bezier2 selected in the Properties, move one of the bezier shape's points a few times in the Viewer.
 
Expected behaviour
SplineWarp should accurately preview the results in the Viewer.
 
Actual behaviour
Every other time you move a point, no warping is displayed in the Viewer.
 
Workaround
Unknown.
 
Reproduced by support
This bug has been reproduced in:
Nuke 16.0v2 - Windows 11 - Rocky 9
Nuke 16.0v1 - Windows 11 
Nuke 15.2v1 - Windows 11 - Rocky 9 - REGRESSION
 
Unable to reproduce bug in:
Nuke 15.1v7 - Windows 11 - Rocky 9
 
Earliest version tested
Nuke 15.1v7
- This issue doesn't appear in this version and has regressed
 

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