[BUG] References inside Referenced files do not work

[TruthNZ]

Sample Project:
https://github.com/TruthNZ/OpenAPICodegenTest/tree/master/RelativeReferenceError

Cannot run mvn generate-sources, I get the error:
-Unable to load RELATIVE ref: ../schemas/Path1Request.yml path: C:\Development\OpenAPICodeGenTest\RelativeReferenceError\src\main\resources\api

Yet I can validate and review the API fine - at least using OpenAPI Designer in VS Code.

It looks like the direct references in the API (RelativeReferenceError.yml) works fine, but any further references in those referenced files do not.