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src/libraries/System.Net.Sockets/tests/FunctionalTests/SocketDuplicationTests.cs

@@ -336,7 +336,7 @@ public async Task DuplicateAndClose_TcpServerHandler(AddressFamily addressFamily
 
                 async Task RunCommonHostLogic(int processId)
                 {
-                    await Task.Yield();
+                    await Task.CompletedTask.ConfigureAwait(ConfigureAwaitOptions.ForceYielding);
 
                     pipeServerStream.WaitForConnection();