In PS RetryHandler DecodingFailureException thrown although status exists

This is returned by the gRPC exception:

Status(StatusCode="Unknown", Detail="An unknown search error occurred (status: 400).")

But the parsing code returns null and then throws the DecodingFailureException - this can better be handled and not result in the thrown exception.

The fact that the service includes 400 but the StatusCode is "Unknown" seems odd. Possible server bug? It could also be that I am using an older build, 7.2.3 build 6710 and this is fixed in a newer one.