ID 521500 - Toggling the Project3D's crop knob does not update the result in the 3D Viewer

Problem summary
Toggling the Project3D's crop knob does not update the result in the 3D Viewer.
This behaviour occurs with both the Hydra or Nuke renderers.
 
Customer reported version
Nuke 13.0v7
 
Customer reported platform
Windows 10
 
Steps to reproduce
 
1) Open Nuke. 
 
2) Create a CheckerBoard node.
 
3) Add a Transform downstream of the CheckerBoard. Increase the Transform node's scale value, so that the bounding box is much larger than the format.
 
4) Create a Project3D node and connect its input to the Transform node.
 
5) Create a Card and connect its input to the Project3D node.
 
6) Create a Camera and connect it to the Project3D's cam input.
 
7) Position the Camera in the 3D Viewer, so that you can see the CheckerBoard projected on the Card.
 
8) Double click the Project3D node, to open its Properties, and toggle the crop knob on/off.
 

 
9) If you create a ScanlineRender node and an additional Camera node to view the result in the 2D Viewer, the crop does update correctly.
 

 
Expected behaviour
Toggling the Project3D's crop knob should update the result in the 3D Viewer.
 
Actual behaviour
Toggling the Project3D's crop knob does not update the result in the 3D Viewer.
 
Workaround
Unknown.
 
Reproduced by support
This bug has been reproduced in:
Nuke 13.2v4 - Windows 10 - Linux CentOS 7
Nuke 12.0v1 - Windows 10 - Linux CentOS 7
Nuke 9.0v1 - Windows 10
 
Earliest version tested
Nuke 9.0v1 
- This issue appears to be in all tested versions of the product