Google's overhaul of Chrome's extension architecture continues to pose problems for developers of ad blockers, content filters, and privacy tools. This story starts in 2019 when Google detailed its plans to improve extensions’ security and privacy features with a project it called Manifest V3 (MV3) that changes the way extensions use various APIs. MV3 is currently being rolled out, and Google looks set to stop supporting extensions that use its predecessor MV2 this year. Back in 2019 Google insi...