Developing plugin for Rider - using FileDocumentManagerAdapter

Trying to develop a plugin for Rider EAP 163.12057.

1. In Run Configuration added "-Didea.platform.prefix=Rider"
2. Change the SDK to point to the Rider installation

When I tried to put a breakpoint inside the ApplicationComponent it does not seems to stop.

Is plugin development is something that is supported by this specific version?

If so what can be the problem?