{"id":"tp-55194","type":"article-newspaper","title":"Ethereum Upgrade Tests Can Miss Live-App Failures, Sprinter CEO Says","author":"Simon Yoon","publisher":"TOKENPOST Inc.","url":"https://www.tokenpost.com/news/technology/55194","datePublished":"2026-11-12T09:46:43.000Z","dateModified":"2026-11-12T09:46:43.000Z","language":"en","abstract":"Greg Markou said a MetaMask-related assumption went undetected during the August 2021 EIP-1559 upgrade, affecting nearly every application that relied on web3.js.","section":"Technology","references":[]}