# Fusaka Client Bugs post mainnet List of known bugs - potential fixes Post mainnet release bugs: * Prysm mainnet bug. Follow up posts from [potuz](https://www.potuz.net/posts/fulu-bug/) and [prysm team](https://prysm.offchainlabs.com/docs/misc/mainnet-postmortems/). * Rbuilder reth dependencies were not updated for Buildernet, causing a bit of a hiccup (`simulation failed: invalid excess blob gas: got 82878256, expected 83053018; parent excess blob gas: 82747184, parent blob gas used: 917504`) in blob delivery for blob gas fee calculation post BPO1. Updating the reth dependencies [resolved the issue](https://discord.com/channels/595666850260713488/892088344438255616/1447973834866294805). * Found a bug in Nimbus `SSZ DataColumnSidecar: object dynamic portion starts at invalid offset` fixed in [7794](https://github.com/status-im/nimbus-eth2/pull/7794) * Found a [bug](https://github.com/status-im/nimbus-eth2/issues/7778) in Nimbus for setting BPO 0 at genesis. Fixed in [7788](https://github.com/status-im/nimbus-eth2/pull/7788). * Found a peering bug in Nethermind - statusMessage calculation incorrect and other peers rejecting connection due to `Incorrect message`. Nethermind can't peer with geth or reth. Fix still pending. * Found a peering bug in prysm. Caused by [16100](https://github.com/OffchainLabs/prysm/pull/16100) * Found an eth_config bug regarding BPO_1 being set to genesis. Fixed in [5609](https://github.com/lambdaclass/ethrex/pull/5609) * Found a bug in ethrex, latest stable release was unable to run on arm. Fix was pushed. * Found a bug in erigon eth68/69 hive tests. * Found a bug in erigon, latest stable release was unable to send 6 txs getting `RLPTooLong` error. Fixed in [18309](https://github.com/ledgerwatch/erigon/pull/18309). * Found a peering bug in lighthouse, latest stable release with minimal preset fails with `columns pruned within boundary` after finalization. Issue is in [8583](https://github.com/sigp/lighthouse/issues/8583)