allow multiple transactions from the same account on the same block

CHANGELOG.md

@@ -96,6 +96,7 @@ to now accept a `codec.JSONMarshaler` for modular serialization of genesis state
 when method receivers are offline/multisig keys.
 * (x/auth) [\#5892](https://github.com/cosmos/cosmos-sdk/pull/5892) Add `RegisterKeyTypeCodec` to register new
 types (eg. keys) to the `auth` module internal amino codec.
+* (x/auth) Allow more than one Tx per account per block
 
 ### State Machine Breaking
 

x/auth/ante/sigverify.go

@@ -219,10 +219,7 @@ func (svd SigVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simul
 // IncrementSequenceDecorator handles incrementing sequences of all signers.
 // Use the IncrementSequenceDecorator decorator to prevent replay attacks. Note,
 // there is no need to execute IncrementSequenceDecorator on CheckTx or RecheckTX
-// since it is merely updating the nonce. As a result, this has the side effect
-// that subsequent and sequential txs orginating from the same account cannot be
-// handled correctly in a reliable way. To send sequential txs orginating from the
-// same account, it is recommended to instead use multiple messages in a tx.
+// since it is merely updating the nonce.
 //
 // CONTRACT: The tx must implement the SigVerifiableTx interface.
 type IncrementSequenceDecorator struct {
@@ -236,8 +233,8 @@ func NewIncrementSequenceDecorator(ak keeper.AccountKeeper) IncrementSequenceDec
 }
 
 func (isd IncrementSequenceDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error) {
-	// no need to increment sequence on CheckTx or RecheckTx
-	if ctx.IsCheckTx() && !simulate {
+	// no need to increment sequence on RecheckTx
+	if ctx.IsReCheckTx() && !simulate {
 		return next(ctx, tx, simulate)
 	}