Derived themes (dark-cool, etc) not working in v8.3 and MACOS

Has anyone else had issues getting derived themes such as dark-cool to work on ignition8.3 and macOS?

I suspect it is to do with the themes folder not being in the expected path.

The documentation mentions folder:

%IgnitionInstallationDirectory%\data\config\resources\core\com.inductiveautomation.perspective\themes

However the system automatically created folder:

%IgnitionInstallationDirectory%\data\config\resources\core\Ignition Themes

This looks like a bug to me.

Not a bug, but a change in architecture. The system-supplied themes are now immutable resources fed directly to the browser. There are other discussions of this on the forum.

Light and dark are immutable, but warm and cool options should be accessible.