ID 491034 - GridWarp node's Draw Boundary tool doesn't draw correctly if the Viewer is using downrez or proxy

Problem summary
GridWarp node's Draw Boundary tool doesn't draw correctly if the Viewer is using downrez or proxy

Customer reported version
nuke.13.0v4

Customer reported platform
CentOS 7

Steps to reproduce

1) Open Nuke

2) Create a GridWarp node and view it

3) Select the Draw Boundary tool, and draw a GridWarp area, it works correctly

4) In the Viewer controls, enable proxy mode or set the downrez to anything other that 1:1

5) Select the Draw Boundary tool, and draw a GridWarp area, it is in the wrong position and the wrong size:

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Expected behaviour
For the GridWarp boundary to be the same are the area drawn when using proxy or downrez modes

Actual behaviour
The GridWarp boundary is smaller than what was drawn by the user

Workaround
Use the GridWarpTracker node, as it doesn't have the same issue

Reproduced by support
This bug has been reproduced in:
Nuke 13.0v5 - Windows 10, CentOS 7.5, macOS Big Sur
Nuke 10.0v1 - Windows 10, CentOS 7.5, macOS Big Sur


Earliest version tested
Nuke 10.0v1 - This issue appears to be in all versions of the product