Dynamic Batching is breaking vertex color ?

Hey there,

I have a very simple vertex coloring shader (pasted at the end of the post).

Works great when I have a single instance of a mesh in my scene. However, as soon as dynamic batching comes into play, my vertex coloring seems to be broken :

If I explicitly "DisableBatching" = "True" in my shader tags, everything's fine.

Here's the shader :

 struct v2f
 {
     fixed4 color : COLOR;
     fixed4 pos : SV_POSITION;
     fixed2 uv : TEXCOORD0;
 };

 v2f vert(appdata_full v)
 {
     v2f o;
     o.pos = UnityObjectToClipPos(v.vertex);
     o.uv = v.texcoord;
     o.color = v.color;

     return o;
 }

 fixed4 frag(v2f i) : COLOR
 {
     return i.color;
 }

Anyone knows what could be happening ?

Thanks !