Sui Mainnet Halts After v1.72 Gas-Charging Bug, SUI Drops 6.6%

| coinpaprika.com
Sui mainnet suffered a 5-hour-55-minute halt on May 29, 2026 after a v1.72 “gas-charging” logic bug triggered a validator consensus failure. During the outage, more than one-third of validator stake signed different block digests, so certification could not complete and on-chain checkpoints stopped forming. Sui traced the problem to edge-case consensus commit logic. Recovery required manual coordination: validators purged corrupted consensus data and deployed corrected logic. Before block production resumed, more than two-thirds of stake completed an emergency upgrade. After the chain restarted, some nodes reportedly remained under degraded performance. Market impact: SUI fell 6.6% during the stall and briefly traded near $0.90. Trading volume dropped about 33% over the same 24-hour window, while DeFi activity on Sui froze and new on-chain actions were delayed or blocked. The team said this was the second major Sui outage in 2026, following a similar January incident, and it will publish a full post-incident review. For traders, the immediate takeaway is that Sui mainnet stability can be sharply affected by version-introduced consensus/gas logic bugs, which may translate into temporary liquidity pullbacks and volatility spikes. Longer term, the forthcoming review on whether “Address Balances”/gas accounting needs redesign could influence expectations for future network safety and upgrade risk.
Bearish
The outage was a direct consensus failure triggered by a version-level “gas-charging” bug. In the short term, this kind of incident typically tightens liquidity, interrupts DeFi flows, and increases uncertainty around execution and settlement—consistent with SUI’s 6.6% drop and ~33% volume decline during the halt. Even after recovery, reports of degraded node performance can keep traders cautious. In the medium term, the market may reprice Sui upgrade risk until the promised post-incident review clarifies whether “Address Balances”/gas accounting needs redesign or separation from consensus/epoch transition. Historically, repeated mainnet stalls (this was the second in 2026) can weigh on sentiment and raise the probability of sell-the-news reactions around future upgrades. However, the chain returned to normal and the issue was fixed via coordinated validator action, which limits the downside if the review confirms a clean remediation path. Overall, the immediate price impact and risk perception skew negative.