Sui (SUI) restored its mainnet on Thursday after a crash bug in a recent software update kept the Layer 1 blockchain offline for nearly six hours.
Key Points:
- Sui's mainnet stalled for 5 hours and 55 minutes before engineers rolled out a fix.
- The team blamed a bug in its 1.72 release that broke the gas charging logic.
- SUI slipped to $0.89 during the halt, then recovered toward $0.925.
Sui Outage Lasts Nearly Six Hours
The team behind the network first warned on X that the mainnet had stalled, then later confirmed that block production and transaction processing were back to normal. Engineers traced the halt to the chain's 1.72 release, which carried a crash bug in the gas charging logic. The project said a full incident review, or post-mortem, will follow in the coming days.
The disruption ran from 14:15 to 20:32 UTC on Thursday.
Its status page marked the downtime at 5 hours and 55 minutes, and validators kept running under degraded performance afterward. Mysten Labs, the studio that built Sui, reported no lost user funds. The freeze still paused activity across protocols such as Cetus, NAVI and the USDC (USDC) stablecoin ecosystem on the chain.
Also Read: SUI Must Reclaim $1.31 To Avoid A Deeper Structural Breakdown
Repeated Downtime Tests Sui Reliability
This marked Sui's second outage of 2026 and its third major failure since late 2024. A January stall had already knocked the chain offline for more than six hours, while a separate failure in November 2024 stemmed from faulty transaction scheduling logic.
Each episode raises reliability questions for a network built to rival faster Layer 1 chains. Observers compare the record to Solana (SOL), which suffered a five-hour halt in 2024 before it hardened its software. The promised post-mortem should show whether the latest patch reaches a deeper design flaw or a one-off coding error.
SUI Price Dips Then Recovers
SUI briefly fell from $0.95 to $0.89 as the chain stalled, then steadied near $0.925, recovering most of the lost ground within hours. The token has added about 1.5% over the past 24 hours.
Earlier in May, SUI climbed close to $1.40, a roughly 40% weekly surge and its highest level since January. That rally followed a move by Sui Group Holdings to stake 108.7 million tokens, pulling nearly 3% of the circulating supply off the market, alongside optimism ahead of the CME Group futures launch. Even so, the token sits down roughly 17% on the week as the broader crypto market weakens.
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