ID 555574 - Applying rotation to a Roto node, and panning the Viewer, causes the splines in the Viewer to disappear

Problem summary
Applying rotation to a Roto node, and panning the Viewer, causes the splines in the Viewer to disappear.
 
Customer reported version
Nuke 14.0v5
 
Customer reported platform
CentOS 7
 
Steps to reproduce
 
1) Open Nuke.
 
2) Create a Roto node.
 
3) In the Viewer, create a Bezier shape.
 
4) Downstream of the Roto, add a Transform node.
 
5) Change the Transform's rotate knob to 45.
 
6) Pan the Viewer so that the roto splines are now in the bottom right corner of the Viewer panel. 
 

 
Expected behaviour
The roto splines should be visible, regardless of any nodes downstream and where the splines are positioned in the Viewer panel.
 
Actual behaviour
Applying rotation to a Roto node, and panning the Viewer, can cause the splines in the Viewer to disappear.
 
Workaround
Unknown.
 
Reproduced by support
This bug has been reproduced in:
Nuke 14.0v6 - Windows 10 - Linux CentOS 7
Nuke 10.0v1 - Windows 10 - Linux CentOS 7
 
Earliest version tested
Nuke 10.0v1
- This issue appears to be in all tested versions of the product