add: 18551

CHANGELOG.md

@@ -74,6 +74,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (client/server) [#18345](https://github.com/cosmos/cosmos-sdk/pull/18345) Consistently set viper prefix in client and server. It defaults for the binary name for both client and server.
 * (simulation) [#17911](https://github.com/cosmos/cosmos-sdk/pull/17911) Fix all problems with executing command `make test-sim-custom-genesis-fast` for simulation test.
 * (simulation) [#18196](https://github.com/cosmos/cosmos-sdk/pull/18196) Fix the problem of `validator set is empty after InitGenesis` in simulation test.
+* (baseapp) [#18551](https://github.com/cosmos/cosmos-sdk/pull/18551) Fix SelectTxForProposal the calculation method of tx bytes size is inconsistent with CometBFT
 
 ### API Breaking Changes