Google is removing the remaining Chrome support workarounds that allow legacy ad-blocking extensions built for Manifest V2 to keep functioning. Multiple outlets report that a Chromium change eliminates the “kExtensionManifestV2Disabled” flag, which had effectively served as a loophole for older extensions after Chrome ended support for Manifest V2 extensions. The Verge and other sources note that Chrome already phased out Manifest V2 ad-blocking extensions in 2024, leading many users to transition to newer versions. The latest change is described as cutting off the final technical pathway used by some Manifest V2-based blockers. Chrome 150, expected around June 30, is reported to remove this last flag, with additional remaining Manifest V2-related components scheduled for removal in Chrome 151, expected in July. A comment associated with the Chromium commit cites security risks, complexity, and technical debt tied to maintaining the functionality, while stating that other browsers could continue supporting Manifest V2 if they choose. Because Chromium is shared across browsers, the change is also expected to affect other Chromium-based browsers such as Microsoft Edge and Opera, though their timelines depend on each vendor’s implementation.