Chrome’s MV3 bug lets adblockers resurrect webRequestBlocking
A Chrome developer uncovered a 2023 bug that restores the webRequestBlocking permission in Manifest V3, letting extensions block network requests despite Google’s planned removal. The flaw sidesteps Google’s ad‑tech crackdown, meaning adblockers can keep working on Chrome without reverting to legacy MV2. It highlights how hidden JavaScript bindings can re‑introduce legacy capabilities.