Sui Restores Mainnet Operations After Second Outage Tied to Address Balances Bug
According to Sui, two mainnet interruptions within 48 hours were caused by a v1.72 gas accounting issue involving Address Balances, disrupting epoch transitions and temporarily preventing transaction finality before emergency fixes restored operations.
Sui said its mainnet suffered two interruptions within 48 hours after the v1.72 upgrade introduced a gas accounting issue involving the new Address Balances feature and existing gas fee logic. The first outage began on May 28, 2026 and lasted 5 hours and 55 minutes, while a second disruption followed on May 29 during an epoch transition when validators could not finalize a consistent network state. According to Sui, the first fix was temporary and did not fully resolve the underlying issue, which affected validator consensus during epoch transitions and temporarily prevented user transaction finality even though validators remained online. Sui confirmed on May 30 that normal operations had resumed after an emergency fix. Market data showed SUI trading around $0.91-$0.92 on May 29, down about 7%-8% for the day, as users faced delayed token transfers, paused DeFi activity, and disrupted NFT transactions. The May incidents marked Sui’s second major network failure of 2026 after a separate consensus-related outage in January that also lasted about five to six hours.
- Mainnet: A blockchain’s live public network where real transactions are processed and finalized.
- Address Balances: A Sui v1.72 feature whose interaction with gas accounting was identified by Sui as part of the outage’s root cause.
- Epoch transition: The network’s shift from one operating period to the next, when validators must agree on the next consistent state.