On December 18, the Polygon Foundation confirmed that the Polygon PoS network experienced an interruption due to a bug affecting some RPC nodes, but the chain continued to maintain overall block production and was quickly resolved.
The incident highlights the differences between the data access layer (RPC, block explorer) and the consensus layer, while also demonstrating how an issue from a validator can disrupt user experience even though the network continues to operate.
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Some RPC nodes of Polygon PoS encountered errors, but the overall network block production was not halted for an extended period.
The cause noted was a faulty proposal from the validator causing the Bor nodes to fork; the team has deployed a patch.
POL decreased by about 4% in the initial reaction, while the focus post-incident is on increasing testing and community coordination.
Polygon PoS remains stable despite some RPC nodes encountering errors
The incident primarily affected the RPC layer and the latency of data display, while the Polygon PoS network continued to produce blocks overall and was confirmed to have processed successfully.
Polygon Foundation reported that the disruption occurred on part of the RPC node infrastructure of the PoS network. In such situations, users may see data query errors, wallet/app interfaces struggling to retrieve transaction statuses, or slow block explorer updates, even as validators continue the consensus process.
Immediate implications noted that the issue has been verified and resolved, and the network continues to produce blocks effectively. The remaining RPC nodes are still processing transactions normally during the incident, so the actual impact may not be uniform across RPC providers and user regions.
In analyses tracking network stability, traders often combine system status data, validator reactions, and price volatility; you can refer to market tool and derivatives perspectives on BingX to assess operational risks when access infrastructure (RPC/explorer) is congested even though the network continues to produce blocks.
"The disruption occurred due to a faulty proposal from a validator causing the Bor nodes to fork and temporarily halt production."
– Sandeep Nailwal, Co-founder of Polygon
Error proposal from the validator causing Bor nodes to fork and requiring synchronization to achieve quorum
Polygon reported that a faulty proposal from the validator caused Bor nodes to branch, forcing the team to release a patch and validators to synchronize the data to achieve quorum.
According to the incident description, the technical team identified a 'faulty proposal' from a validator as the triggering factor, subsequently deploying patches for the node operators. When a part of the node forks, the network may experience temporary discrepancies in the data returned by RPC/explorer, causing delays in tracking blocks/transactions compared to the actual state.
Polygon also noted that validators need time to synchronize data to return to a consistent state and achieve quorum. During the transition phase, users may experience slow or inconsistent block explorer displays, even though the overall block production process continues.
Market impact: POL decreased by about 4% in the initial reaction
The immediate reaction after the incident recorded POL decreasing by about 4%, indicating that the market reflects operational risks but no prolonged shocks from the halting of the chain have occurred.
Regarding the noted transaction metrics, CoinMarketCap recorded Polygon trading around $0.11 with a market cap of $1.13 billion. In the last 24 hours, POL decreased by 6.18%, while the decrease in 90 days was 59.14%—these figures indicate that price volatility also depends on broader market trends, not just a single infrastructure incident.
To track technical progress in real-time, users can check the status page: Coincu research. When the status stabilizes, RPC query errors and explorer latency will usually gradually decrease as the infrastructure providers synchronize.
Operational lesson: infrastructure incidents can persist even after a hotfix has been deployed
Previous incidents have shown that even with a hotfix, restoring the entire backend service (RPC/explorer) may still take time, as it depends on synchronization and the infrastructure provider.
From an operational perspective, the difference between 'the chain continues to produce blocks' and 'users feel the network is faulty' often arises from the data access layer. When RPC nodes or explorers are overloaded, apps may report errors, transaction statuses may be difficult to track, and dApp developers must switch endpoints or utilize multi-provider failover to avoid bottlenecks.
Post-incident measures focus on testing and community coordination
The focus post-incident is to reinforce the testing process, reduce risks from changes/proposals at the validator level, and improve coordination between node operators and the community.
Technological measures were reinforced after the incident. In practice, development teams often increase testing before implementing changes, clarify the patch deployment process for node operators, and encourage community participation in feedback to enhance the long-term resilience of the network against similar errors.
Frequently asked questions
What is an RPC node incident and who does it affect?
RPC nodes are access points for wallets, dApps, and on-chain data query services. When some RPC nodes encounter errors, users may find apps unable to load balances, transaction statuses, or explorers updating slowly, even though the chain can still continue producing blocks.
Why is the network still producing blocks despite RPC interruptions?
RPC primarily serves queries and sends transactions via access infrastructure, while block production depends on consensus layers among validators. Therefore, a part of the RPC experiencing errors may degrade user experience but does not necessarily halt the entire network from producing blocks.
How much did POL decrease during the incident and what metrics were noted?
Event content recorded POL decreased by approximately 4% after the initial reaction. At the same time, accompanying data indicates a price around $0.11, a market cap of $1.13 billion, down 6.18% in 24 hours and down 59.14% in 90 days.
What should users do when the block explorer or wallet displays slowly?
You can change the RPC endpoint (if the wallet/dApp supports it), check the network status page to monitor recovery progress, and wait for synchronization to complete. If a transaction has been sent, slow explorer updates do not mean the transaction has failed—it’s usually just a display delay.
Source: https://tintucbitcoin.com/polygon-pos-khoi-phuc-sau-su-co-node/
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