Chrome Material Issue

Hey everyone,

I have something weird happening with the game I develop. See in this test page : http://test.wazana.io/ ( it is a special preview for you!  )

The materials of the units and buildings are flashing. I observed this behavior only on chrome (working normal on IE, Edge and Mozilla) and not on all computers I tested (maybe there is a problem with a specific version of chrome).
I use BABYLON.MultiMaterial on units and buildings because they always have 2 colors so one material for each color. But when it flashes on Chrome, this is either one color or the other on the entire mesh.

I put a video attached which show the bug in case you don't see it on the test page. (weird video format but playable with VLC)

Bye, Pichou

chromematerialbug.webm