I am running the Grpc.Net.Client tests on .NET 6. I have noticed some intermittent errors caused by SocketsHttpHandler returning two values for an HTTP/2 header that should only ever have one value.

Headers in the client (note the duplicate "14" values):

I have confirmed the server is only returning the header once:

This error is intermittent. Is it a thread-safety/race condition?

Wireshark trace: duplicate-footer-value.zip

.NET SDK (reflecting any global.json):
 Version:   6.0.100-preview.6.21328.10
 Commit:    2630e4ccfe