Reflection work in UE4 but not in UE5 (both versions)

Hi, i make a simple material to check the reflection BUT in UE4 it work, in UE5 not. They are same material. Can someone tell me what is this problem? Thanks


The behaviour of materials has changed between Unreal Engine 4 and Unreal Engine 5. Materials in UE5 use different shaders and work differently in some ways. It’s also possible that there is a bug in the UE5 implementation of the material.

I tried using UE5 and it works for me both with negative and positive values. Setting the value to 50 is perhaps a bit to high causing it to break down.