Issues

• Forced-reflow classifier can misclassify main-thread layout due to JavaScript on another thread

  GoogleChrome/lighthouse#17306 · Filter by author brianoestberg opened on Oct 8, 2026

• robots-txt audit fails under connect-src 'none' despite valid robots.txt

  GoogleChrome/lighthouse#17292 · Filter by author pederbe opened on Oct 7, 2026

• Reduce memory usage

  GoogleChrome/lighthouse#17291 · Filter by author connorjclark opened on Oct 7, 2026

• Fix webmcp smoke test

  agentic-webtest backlog
  GoogleChrome/lighthouse#17277 · Filter by author connorjclark opened on Oct 6, 2026
  

• Consider making the ARD checks re: legacy sources high-severity

  14.0agentic-web
  GoogleChrome/lighthouse#17271 · Filter by author connorjclark opened on Oct 6, 2026
  1

• docs(readme): consider Web Performance Budget Gate for Related projects

  GoogleChrome/lighthouse#17254 · Filter by author KRISHNAMMurarka opened on Sep 28, 2026

• PageSpeed Insights / Lighthouse synthetic performance results may not always measure the same page lifecycle experienced by a normal first-time user.

  bug
  GoogleChrome/lighthouse#17244 · Filter by author riccardobasti opened on Sep 17, 2026
  1

• PSI intermittently attributes unrelated URL request to first-party script in Network Dependency Tree

  bugP1
  GoogleChrome/lighthouse#17237 · Filter by author gbhmacace opened on Sep 11, 2026
  2

• PSI/Lightrider: observedFirstPaint 1.1–2.2 s after the frame is on the filmstrip; reproducible on Shopify storefronts

  bugsimulation / lantern
  GoogleChrome/lighthouse#17230 · Filter by author Naveed-756 opened on Sep 10, 2026
  2

• Disable

  bug
  GoogleChrome/lighthouse#17229 · Filter by author sergeybrin40-cyber opened on Sep 9, 2026

• نوزاد.

  GoogleChrome/lighthouse#17226 · Filter by author mohsen0217mk opened on Sep 8, 2026

• PageSpeed Insights network dependency tree shows unrelated Vimeo and LEGO-associated requests

  bugduplicate
  GoogleChrome/lighthouse#17223 · Filter by author thomaspapanikolaou opened on Sep 6, 2026
  2

• Baseline audit detects false-positive features triggered by internal gatherers

  bugP1
  GoogleChrome/lighthouse#17218 · Filter by author rviscomi opened on Sep 4, 2026
  2

  

• PageSpeed Insights seemingly cannot download MP4s - negatively affecting score

  bug
  GoogleChrome/lighthouse#17216 · Filter by author rgpublic opened on Sep 3, 2026
  1

• Proposal: add PulseCare to Web Perf services in README.md

  GoogleChrome/lighthouse#17209 · Filter by author iRay opened on Sep 1, 2026

• error

  GoogleChrome/lighthouse#17192 · Filter by author Handwerk-direkt-24 opened on Aug 23, 2026

• Target.getTargetInfo: Not allowed crash on pages with cross-origin iframes

  bugpending-close
  GoogleChrome/lighthouse#17180 · Filter by author HardikGoyal2003 opened on Aug 20, 2026
  2

• NO_LCP in PageSpeed Insights with Lighthouse 13.4.1 despite fully rendered page

  bug
  GoogleChrome/lighthouse#17179 · Filter by author Petr008 opened on Aug 18, 2026
  5

• Third-party scripts detect Lighthouse via its injected globals (__nativePromise / __nativePerformance) to evade measurement

  GoogleChrome/lighthouse#17176 · Filter by author jacoborbach opened on Aug 16, 2026

• Observed FCP/LCP inflated by whole seconds in headless runs (viz ThrottleUnresponsiveClient BeginFrame throttling) - reproduces on PSI

  GoogleChrome/lighthouse#17148 · Filter by author Ciki opened on Jul 28, 2026
  11

• Zawthatnaing

  GoogleChrome/lighthouse#17134 · Filter by author zn441293-sys opened on Jul 16, 2026

• WebMCP Gatherers Incompatible with Snapshot Mode

  GoogleChrome/lighthouse#17123 · Filter by author lusayaa opened on Jul 10, 2026
  1

• Incorrect Slovak (sk) translations of accessibility terminology: "Dostupnosť" (availability) instead of "Prístupnosť", "dostupný názov" instead of "prístupný názov" (53 strings)

  bug
  GoogleChrome/lighthouse#17113 · Filter by author rraddatch opened on Jul 4, 2026

• Feature: LLM/AI-friendly compact JSON output (omit embedded base64 screenshots)

  needs-discussion
  GoogleChrome/lighthouse#17106 · Filter by author Lynx-Boss opened on Jun 29, 2026
  1

• Stylesheets using rel="preload" as="style" are now flagged as render‑blocking

  bug
  GoogleChrome/lighthouse#17104 · Filter by author monkeysdocode opened on Jun 28, 2026
  3