ID 267223 - [ParticleEmitter] Particle Emitter disables Root Project Settings in Standard Nuke

Problem summary
Within standard Nuke, if a user imports/creates a ParticleEmitter node, all Root node ( Project Settings ) buttons are disabled:

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The Root Node buttons cannot be enabled until the ParticleEmitter node is deleted.

Customer reported version
nuke.n/a

Customer reported platform

Steps to reproduce

1) Open Nuke

2) Open Nuke Project Settings within the Properties tab
    Note that all the settings can be modified...

3)  Create a ParticleEmitter node, close the 'NukeX' dialog

4) Close and reopen the Project Settings panel

Result: Parts of the Project Settings will be disabled, options cannot be modified.

Expected behaviour
The ParticleEmitter node should not affect the Root node.

Actual behaviour
The Root node's knobs are disabled when a ParticleEmitter is in the script.

Workaround
The Project Settings can only be re-enabled when there are no ParticleEmitter nodes in the script.
Following the steps below will let you temporarily change the settings:

1) Backup and remove any ParticleEmitter nodes from your script

2) Close and reopen your Project Settings, and modify your settings.

3) Copy your ParticleEmitter nodes back into your script.

You can also modify your Project Settings with Python if you do not wish to remove the ParticleEmitter nodes.

Reproduced by support

This bug has been reproduced in:
Nuke11.3v4- Windows 7 - Mac10.14 - CentOS7
Nuke11.3v1- Windows 7 - Mac10.14 - CentOS7
Nuke11.2v1 - Windows 7
Nuke11.1v1 - Windows 7
Nuke11.0v1 - Windows 7
Nuke10.5v1 - Windows 7
Nuke10.0v1 - Windows 7
Nuke9.0v1 - Windows 7
Nuke8.0v1 - Windows 7 - Mac10.14 - CentOS7

Earliest version tested
- This issue appears to be in all versions of the product