ID 510867 - The Viewer becomes blurred when adjusting properties in the C_Stitcher node downstream of a C_GlobalWarp node

Problem summary
The Viewer becomes blurred when adjusting properties in the C_Stitcher node downstream of a C_GlobalWarp node.
 
Customer reported version
nuke.13.2v1
 
Customer reported platform
windows10
 
Steps to reproduce
1) In Nuke, read in two images.
2) Select both Read nodes and add a C_CameraSolver node.
3) Create a C_GlobalWarp node, then a C_Stitcher node.
4) Open the Properties of the C_Stitcher node and select the Vectors tab.
5) Change any knob value and observe the Viewer.
 

 
Expected behavior
The Viewer should display accurate results of the C_Stitcher node when adjusting knobs in the Properties bin.
 
Actual behavior
The image in the Viewer becomes blurred and unrecognizable.
 
Workaround
Clearing the Nuke cache and Properties bin, then reloading the node properties helps to render the correct image in the Viewer.
 
Reproduced by Support in:
NukeX 13.2v2 - Windows 10, CentOS 7
NukeX 13.2v1 - Windows 10
NukeX 13.1v1 - Windows 10
NukeX 12.1v1 - Windows 10, CentOS 7 - regression
 
Unable to reproduce bug in:
Nuke 12.0v8 - Windows 10, CentOS 7
 
Earliest version tested
Nuke 12.0v8 - This issue doesn't appear in this version and has regressed