On May 11, Ethereum's Beacon Chain experienced an unidentified issue that caused a halt in transactions for almost 30 minutes. Although new blocks were proposed, an unknown issue prevented them from being finalized.

This is not the first time such an issue has occurred, as a similar problem happened on March 15. However, the loss of finality was short-lived due to client diversity, which refers to the number of software clients available to network validators. Ethereum developers are investigating the cause of the issue to prevent it from happening again.