Fix typo; Add E2E coverage

e2e/e2etests/test_eth_withdraw.go

@@ -3,6 +3,8 @@ package e2etests
 import (
 	"math/big"
 
+	ethcommon "github.com/ethereum/go-ethereum/common"
+	ethtypes "github.com/ethereum/go-ethereum/core/types"
 	"github.com/stretchr/testify/require"
 
 	"github.com/zeta-chain/zetacore/e2e/runner"
@@ -37,5 +39,18 @@ func TestEtherWithdraw(r *runner.E2ERunner, args []string) {
 
 	utils.RequireCCTXStatus(r, cctx, crosschaintypes.CctxStatus_OutboundMined)
 
+	withdrawalReceipt := mustFetchEthReceipt(r, cctx)
+	require.Equal(r, uint8(ethtypes.DynamicFeeTxType), withdrawalReceipt.Type, "receipt type mismatch")
+
 	r.Logger.Info("TestEtherWithdraw completed")
 }
+
+func mustFetchEthReceipt(r *runner.E2ERunner, cctx *crosschaintypes.CrossChainTx) *ethtypes.Receipt {
+	hash := cctx.GetCurrentOutboundParam().Hash
+	require.NotEmpty(r, hash, "outbound hash is empty")
+
+	receipt, err := r.EVMClient.TransactionReceipt(r.Ctx, ethcommon.HexToHash(hash))
+	require.NoError(r, err)
+
+	return receipt
+}

zetaclient/chains/evm/observer/observer_gas.go

@@ -126,7 +126,7 @@ func (ob *Observer) supportsPriorityFee(ctx context.Context) (bool, error) {
 	defer ob.Mu().Unlock()
 
 	ob.priorityFeeConfig.checked = true
-	ob.priorityFeeConfig.checked = isSupported
+	ob.priorityFeeConfig.supported = isSupported
 
 	return isSupported, nil
 }