PBR blacked out on android Galaxy S8+ (webgl 2)

Hi,

found issue with PBR on android device, that have webgl 2.0 support, probably its chrome issue but thought to post it here as well.

Device: Galaxy S8+

OS: Android 7.0

Chrome: 65.0.3325.109

Babylon: v3.2.0-rc.2

GPU: {vendor: "ARM", renderer: "Mali-G71", version: "WebGL 2.0 (OpenGL ES 3.0 Chromium)"}

How to reproduce: any pbr playground will go, as all of them show black meshes instead of pbr materials. PG

It fails without any error or even warning in console.

Works fine in native browser (Internet) as it has webgl 1.0:

Internet: 6.4.10.5

GPU: {vendor: "ARM", renderer: "Mali-G71", version: "WebGL 1.0 (OpenGL ES 2.0 Chromium)"}