ID 527203 - Having two panels side-by-side causes the spacebar shortcut to make panels smaller

Problem summary
Having two panels side-by-side causes the spacebar shortcut to make panels smaller.
 
Customer reported version
Nuke 13.2v5
 
Customer reported platform
windows10
 
Steps to reproduce
 
1) Open Nuke.
 
2) Right click the top bar of the Viewer's pane > Close Pane
 
3) Mouse over the Properties panel and press the spacebar.
 

 
Expected behaviour
Spacebar should always maximise the panel you are mousing over.
 
Actual behaviour
Having two panels side-by-side causes the spacebar shortcut to make panels smaller.
 
Workaround
Unknown.
 
Reproduced by support
This bug has been reproduced in:
Nuke 14.0v1 - Windows 10 - Linux CentOS 7
Nuke 12.0v1 - Windows 10 - Linux CentOS 7
 
Unable to reproduce bug in:
Nuke 9.0v1 - Windows 10
 
Earliest version tested
Nuke 9.0v1
- This issue doesn't appear in this version and has regressed between Nuke 9.0v1 and Nuke 12.0v1.