UNity 2019.1.9f1 - standard navmesh baking not working

Started with blank unity project added a plane, made it static all, selected to bake navmesh with default settings.

The navmesh that is generated (see attached image) has no objects and I can see nothing generated in the scene view. I’ve worked with navigation a lot in previous projects, can’t see what is going wrong in this instance.

Anything I could try?

Cheers

Additionally this is the navigation settings (see two images attached)

Thanks