ID 486484 - Floating Properties windows can appear behind other floating panes/windows

Problem summary
Floating Properties windows can appear behind other floating panes/windows.

Customer reported version
nuke.13.0v1

Customer reported platform
windows10

Steps to reproduce
1) In Nuke, right-click the Node Graph tab and select Float Tab.
2) In the Properties panel, enable the lock icon to prevent Node properties from opening in the bin.
3) In the Node Graph, create a Group node and observe the behavior of the window.
4) Create any other node (Grade, Transform, Roto, etc) and observe it's window behavior.

Expected behavior
The Properties window/panels should appear in the foreground of all windows/panes/panels.

Actual behavior
The Properties of the Group/LiveGroup/Gizmo nodes disappears behind other panels when focus is lost.

Workaround
Closing the initial panel that appears and re-opening the specific Node property window sometimes allows it to sit on top.

Reproduced by Support in:
Nuke 13.0v4 - Windows 10, macOS 10.14
Nuke 13.0v1 - Windows 10
Nuke 12.0v1 - Windows 10
Nuke 11.0v1 - Windows 10
Nuke 10.0v1 - Windows 10
Nuke 9.0v1 - Windows 10
Nuke 8.0v1 - Windows 10, macOS 10.14

Earliest version tested
Nuke 8.0v1 - This issue appears to be in all versions of the product