ID 526105 - Pipe highlights are not updated correctly when viewing multiple inputs with different frame ranges

Problem summary
Pipe highlights are not updated correctly when viewing multiple inputs with different frame ranges.
 
Customer reported version
Nuke 13.2v2
 
Customer reported platform
Windows 10
 
Steps to reproduce
 
1) Open Nuke.
 
2) Read in some footage.
 
3) Create two FrameHold nodes and connect them to the Read node.
 
4) Set the first frame knob on each frame hold to a different value (for example, 1 and 10).
 
5) Create a FrameRange node downstream of each FrameHold node.
 
6) On the FrameRange nodes, set the frame range knob to different values (for example, 1-10 and 11-20).
 

 
7) Attach the FrameRange nodes to an AppendClip node. Your script should now look like the following:
 

 
8) Select the Viewer node. The pipes for the processed nodes should now be highlighted:
 

 
9) Scrub/play through the frames in the Viewer and notice that the highlight does not get updated. In this case, when viewing frames 11-20 in the Viewer, it is expected that the pipes on the right-hand side would be highlighted:
 

 
Expected behaviour
Pipe highlights should be updated to reflect the nodes that are currently being processed. 
 
Actual behaviour
Pipe highlights are not updated correctly when viewing multiple inputs with different frame ranges.
 
Workaround