{
			// See https://github.com/cosmos/ibc-go/security/advisories/GHSA-jg6f-48ff-5xrw
			"non-deterministic JSON ack serialization should return an error",
			func() {
				// Create a valid acknowledgement using deterministic serialization.
				ack = channeltypes.NewResultAcknowledgement([]byte{byte(1)}).Acknowledgement()
				// Introduce non-determinism: insert an extra space after the first character '{'
				// This will deserialize correctly but fail to re-serialize to the expected bytes.
				if len(ack) > 0 && ack[0] == '{' {
					ack = []byte("{ " + string(ack[1:]))
				}
			},
			errors.New("acknowledgement did not marshal to expected bytes"),
			false,
		},