ID 512906 - Nuke/Studio crashes when disabling monitor out when using multiple Nuke/Studio sessions

Problem summary
Nuke/Studio crashes when disabling monitor out when using multiple Nuke/Studio sessions
 
Customer reported version
nuke.13.1v4
 
Customer reported platform
centos7
 
Steps to reproduce
 
1) Open Nuke Studio and import a clip
2) Enable monitor out and playback the clip
3) Stop the playback
4) Open a second Nuke Studio and import a clip (when this happens then monitor output automatically switches to the new session)
5) Playback the clip
6) While the clip is playing back disable monitor out in that second session
7) Switch back to the first Nuke Studio session (normally this should auto switch the image, but in testing the display shows black)
8) Disable monitor out in the first Nuke Studio session, it crashes

Similar steps can be used in Nuke's Node Graph to get the same crash.
 
Expected behaviour
For the Monitor Output to be disabled
 
Actual behaviour
Nuke/Studio crashed
 
Workaround
Unknown. 
 
Reproduced by support
This bug has been reproduced in:
Nuke 13.2v2 - CentOS 7 - AJA Kona 4
NukeStudio 13.2v2 - CentOS 7 - AJA Kona 4
NukeStudio 12.1v1 - CentOS 7 - AJA Kona 4 - regression
 
Unable to reproduce bug in:
NukeStudio 13.2v2 - Windows 10 - AJA Kona 5
NukeStudio 13.2v2 - Windows 10 - Blackmagic Decklink 4K Extreme
NukeStudio 12.0v6 - CentOS 7 - AJA Kona 4
 
Earliest version tested
NukeStudio 12.0v6 - This issue doesn't appear in this version and has regressed