Issues

• Create a custom test for api.OfflineAudioContext.startRendering.chunkSize_parameter

  openwebdocs/mdn-bcd-collector#3462 · Filter by author ddbeck opened on Oct 12, 2026

• Coverage statistics

  openwebdocs/mdn-bcd-collector#3444 · Filter by author Elchi3 opened on Oct 7, 2026

• HTMLElement* constructor tests fail

  openwebdocs/mdn-bcd-collector#3353 · Filter by author Elchi3 opened on Sep 1, 2026

• WKWebView reports are always 18.6

  openwebdocs/mdn-bcd-collector#3315 · Filter by author Elchi3 opened on Aug 6, 2026

• Investigate tests for MediaStreamTrackProcessor

  custom-tests
  openwebdocs/mdn-bcd-collector#3270 · Filter by author Elchi3 opened on Jul 9, 2026

• Replace the test datalist with a searchable dropdown

  enhancement
  openwebdocs/mdn-bcd-collector#3256 · Filter by author BittuBarnwal7479 opened on Jun 26, 2026

• Is version_removed questioned?

  update-bcd
  openwebdocs/mdn-bcd-collector#3142 · Filter by author Elchi3 opened on Apr 14, 2026

• Discover HTML element attributes via webref?

  test-builder
  openwebdocs/mdn-bcd-collector#3060 · Filter by author Elchi3 opened on Feb 17, 2026

• Add SVG global attributes testing support

  test-builder
  openwebdocs/mdn-bcd-collector#2971 · Filter by author caugner opened on Jan 12, 2026

• Make it easy to run any test anywhere

  enhancement
  openwebdocs/mdn-bcd-collector#2930 · Filter by author caugner opened on Dec 10, 2025

• CSSStyleDeclaration tests are misleading

  custom-tests
  openwebdocs/mdn-bcd-collector#2784 · Filter by author caugner opened on Oct 3, 2025

• CSPViolationReportBody reporting false in Safari 18.4

  custom-tests
  openwebdocs/mdn-bcd-collector#2360 · Filter by author queengooborg opened on May 8, 2025
  1

• Add ?autorun parameter to run tests automatically on load

  enhancement
  openwebdocs/mdn-bcd-collector#2276 · Filter by author caugner opened on Apr 11, 2025
  2

• Iterator constructor test doesn't work

  custom-tests
  openwebdocs/mdn-bcd-collector#2275 · Filter by author foolip opened on Apr 11, 2025

• Test WebGL extensions with the collector

  custom-tests
  openwebdocs/mdn-bcd-collector#2267 · Filter by author captainbrosset opened on Apr 9, 2025
  6

• css.properties.clip.auto fails in Firefox 1.0 although it's supported

  custom-tests
  openwebdocs/mdn-bcd-collector#2243 · Filter by author caugner opened on Apr 1, 2025
  2

• Detect prefixed CSS properties

  test-builder
  openwebdocs/mdn-bcd-collector#2206 · Filter by author gsnedders opened on Mar 11, 2025

• Add collection for new CSS features

  test-builder
  openwebdocs/mdn-bcd-collector#2196 · Filter by author Elchi3 opened on Mar 7, 2025

• Add test for MediaStreamTrack constraints

  test-builder
  openwebdocs/mdn-bcd-collector#2102 · Filter by author dontcallmedom opened on Jan 29, 2025

• Detect <system-color> CSS type keywords

  test-builder
  openwebdocs/mdn-bcd-collector#1755 · Filter by author ddbeck opened on Aug 20, 2024

• BeforeUnloadEvent tests return false negative in Edge 15-18

  custom-tests
  openwebdocs/mdn-bcd-collector#1666 · Filter by author foolip opened on Jul 12, 2024

• Add custom tests for parameters of IDBDatabase.transaction

  custom-tests
  openwebdocs/mdn-bcd-collector#1614 · Filter by author queengooborg opened on Jul 1, 2024

• Cover worker_support in update-bcd

  update-bcd
  openwebdocs/mdn-bcd-collector#1377 · Filter by author Elchi3 opened on Apr 5, 2024

• Track spec URLs for features

  enhancement
  openwebdocs/mdn-bcd-collector#1246 · Filter by author queengooborg opened on Mar 5, 2024

• Cover global/window events

  test-builder
  openwebdocs/mdn-bcd-collector#1111 · Filter by author Elchi3 opened on Jan 26, 2024
  1