Can you post the material graph?
Most likely your only option is to wait for Epic to fix this though (if they even can). There are currently numerous issues with sampling the global distance field (DistanceToNearestSurface):
Can you post the material graph?
Most likely your only option is to wait for Epic to fix this though (if they even can). There are currently numerous issues with sampling the global distance field (DistanceToNearestSurface):