Just tested Beta 5.0.1 + Max 2016 + Corona 1.3: Could not make edge mode work. Viewport preview (Ctrl+Click "Edge" radiobutton) shows a promising result. Itoo included Corona materials with Forest_Edge map in the opacity slot (a shell map to enable Corona and MR to use edge mode - happy coding DeadClown ;).
When I create a new Material using Forest_Edge in opacity slot, the material becomes completely invisible. The same happens when I untick Legacy mode in the provided materials.
Edge mode works in MR now using Forest_Edge in fact. Was anyone successful with Corona yet? Or is still something missing at Coronas side?
Good Luck