Edges Rendering not working properly after convertToFlatShadedMesh [SOLVED]

Hello,

I have found the following bug:

When you use "convertToFlatShadedMesh()" and then enable EdgesRenderer it will render the triangles instead of the edges.

This even happens with a simple cube also.

Playground:

http://www.babylonjs-playground.com/#1WVZLV