NobaseFee value should be consistent with height

CHANGELOG.md

@@ -37,6 +37,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## Unreleased
 
+### Bug Fixes
+
+* (rpc) [tharsis#831](https://github.com/tharsis/ethermint/pull/831) Fix BaseFee value when height is specified.
+
 ## [v0.9.0] - 2021-12-01
 
 ### State Machine Breaking

rpc/ethereum/backend/backend.go

@@ -941,7 +941,7 @@ func (e *EVMBackend) BaseFee(height int64) (*big.Int, error) {
 	}
 
 	// Checks the feemarket param NoBaseFee settings, return 0 if it is enabled.
-	resParams, err := e.queryClient.FeeMarket.Params(e.ctx, &feemarkettypes.QueryParamsRequest{})
+	resParams, err := e.queryClient.FeeMarket.Params(types.ContextWithHeight(height), &feemarkettypes.QueryParamsRequest{})
 	if err != nil {
 		return nil, err
 	}