ID 577615 - Deleting a track in the Viewer's A or B buffer stops the Viewer from caching all frames

Problem summary
Deleting a track in the Viewer's A or B buffer stops the Viewer from caching all frames.
 
Customer reported version
N/A
 
Customer reported platform
N/A
 
Steps to reproduce
 
1) Open Nuke Studio.
 
2) Import two clips (File > Import File(s)...). The clips should be of different lengths.
 
3) Add the clips on two separate tracks.
 
4) Add one track to the Viewer's A buffer and the other to the B buffer.
 
5) Delete the entire track, which has the shorter clip on it.
 
6) Press play on the timeline and you should see that the sequence will not fully cache (playback will also stop on the last cached frame).
 

 
Expected behaviour
You should be able to cache all frames in the sequence.
 
Actual behaviour
After deleting one of the tracks that is loaded in the A/B buffer, he sequence will not fully cache (playback will also stop on the last cached frame).
 
 
Workaround
Set the Viewer's A buffer to all tracks and turn of the A/B layout mode. The sequence should then cache again as expected:
 

 
Reproduced by support
This bug has been reproduced in:
Nuke Studio 15.0v4 - Windows 10 - macOS 12 (Monterey)
Nuke Studio 15.0v1 - Windows 10
Nuke Studio 14.1v1 - Windows 10
Nuke Studio 14.0v1 - Windows 10
Nuke Studio 13.0v1 - Windows 10 - macOS 12 (Monterey)
 
Unable to reproduce bug in:
Nuke Studio 12.0v1 - Windows 10 - macOS 12 (Monterey)
 
Earliest version tested
Nuke Studio 12.0v1
- This issue doesn't appear in this version and has regressed