http://www.babylonjs-playground.com/#LYXHTH#9
I`m not sure if it is a bug.
I`m replacing THREE with Babylon and was stack with displacement map. As you can see displacement map is not fit to diffuse texture. If to uncomment line 38 everything look fine (it took me 2 days to found that).
P.S. in demo there is symmetrical texture and nobody noticed that red color is higher than white - but it must be vice versa