Camera.SetReplacementShader doesn’t work on PS4

SOS! There’s a plane with Standard shader, a box with a simple shader to show texture. I want to replace the box’s shader in main camera when it runs. How can it be working on PC, but not work on PS4?

I just add a script on the box:
void Start () {
Camera.main.SetReplacementShader(Shader.Find("Custom/ReplaceShader"), "RenderType");
}

When it runs , it should search the all the shaders in the scene ,when found the same rendertype with Custom/ReplaceShader, it replace that shader with Custom/ReplaceShader.

Screen shot on PC befor running:

Result on PC:

Result on PS4：

The shader I use on the box befor has the same tag with Cunstom/ReplaceShader:

Shader "Custom/ReplaceShader" {

Properties {

}

SubShader {

Tags {"RenderType" = "Overlay"}

PASS {

CGPROGRAM

#pragma vertex vert

#pragma fragment frag

#include "UnityCG.cginc"

fixed4 _Color;

struct v2f {

float4 pos : SV_POSITION;

};

v2f vert (appdata_base v)

{

v2f o;

o.pos = mul (UNITY_MATRIX_MVP, v.vertex);

return o;

}


fixed4 frag (v2f i) : SV_Target

{

return float4(0,0,1,1);

}

ENDCG

}

}

}

Did I miss something?