Issues

• Inconsistency: insertion of default values into dictionaries, null vs undefined vs false

  inconsistencyneeds-triage: chromeneeds-triage: firefoxneeds-triage: safarispec clarification
  w3c/webextensions#1124 · Filter by author ilostmypassword2 opened on Oct 15, 2026
  2

• Inconsistency: action.setIcon({path: "relative.png"}) relative path handling

  implemented: firefoximplemented: orionimplemented: safarineeds-triage: chrometopic: action
  w3c/webextensions#1122 · Filter by author carlosjeurissen opened on Oct 14, 2026

• options_ui sub-pixel height issues

  needs-triage: chromeneeds-triage: firefoxneutral: safari
  w3c/webextensions#1121 · Filter by author carlosjeurissen opened on Oct 14, 2026

• Inconsistency: viewport width calculation with visible scrollbar

  needs-triage: chromeneeds-triage: firefoxneeds-triage: safaritopic: action
  w3c/webextensions#1120 · Filter by author carlosjeurissen opened on Oct 14, 2026
  2

• Ignore icon_variants with unknown properties

  implemented: orioninconsistencyneeds-triage: chromeneeds-triage: firefoxneeds-triage: safarispec clarification
  w3c/webextensions#1119 · Filter by author carlosjeurissen opened on Oct 13, 2026

• Keep old color after action.setBadgeBackgroundColor({color: 'invalid'})

  implemented: chromeimplemented: firefoxneeds-triage: safaritopic: action
  w3c/webextensions#1118 · Filter by author carlosjeurissen opened on Oct 13, 2026
  1

• Proposal: Bring back tab.selected: highlighted tabs may not also be selected

  needs-triage: chromeneeds-triage: firefoxneeds-triage: safaritopic: tabs and windows
  w3c/webextensions#1117 · Filter by author Mythical5th opened on Oct 11, 2026
  7

• Inconsistency: selectionText in contextMenus/Menus

  needs-triage: chromeneeds-triage: firefoxneeds-triage: safaritopic: menus
  w3c/webextensions#1116 · Filter by author erosman opened on Oct 11, 2026

• action.setIcon({path: "invalid.png"}) not rejecting as no-op in all browsers

  implemented: chromeneeds-triage: firefoxneeds-triage: safaritopic: action
  w3c/webextensions#1115 · Filter by author carlosjeurissen opened on Oct 9, 2026
  9

• Exposure of types in the browser.* namespaces

  implemented: chromeimplemented: firefoximplemented: orioninconsistencyneeds-triage: safaritpac 2026
  w3c/webextensions#1114 · Filter by author carlosjeurissen opened on Oct 9, 2026

• Agenda discussion for public meeting on 2026-10-22

  agenda
  w3c/webextensions#1113 · Filter by author Rob--W opened on Oct 8, 2026
  3

  

• Populate tabs in the browser.window.onCreated() event listener?

  needs-triage: chromeneeds-triage: firefoxneeds-triage: safaritopic: tabs and windows
  w3c/webextensions#1111 · Filter by author solomonkinard opened on Oct 8, 2026
  5

• macOS: expose sandbox provenance for URLs opened by native applications

  follow-up: safarineeds-triage: chromeneeds-triage: firefoxneeds-triage: safari
  w3c/webextensions#1108 · Filter by author jasoncoolmax opened on Oct 5, 2026
  3

• Inconsistency: order of expired alarm delivery

  needs-triage: chromeneeds-triage: firefoxneeds-triage: safaritopic: alarms
  w3c/webextensions#1107 · Filter by author bershanskiy opened on Oct 4, 2026
  1

• Inconsistency: format of the fulfilled object for browser.notifications.getAll()

  follow-up: chromeinconsistencyneeds-triage: chromeneeds-triage: firefoxneeds-triage: safari
  w3c/webextensions#1105 · Filter by author elijahsawyers opened on Sep 30, 2026

• Inconsistency: Behavior of action.setIcon({})

  implemented: firefoximplemented: safariinconsistencysupportive: chrometopic: action
  w3c/webextensions#1101 · Filter by author oliverdunk opened on Sep 29, 2026
  2

• Proposal: Allow extensions to specify the initial size of Split View panes

  follow-up: chromeneeds-triage: chromeneeds-triage: firefoxneeds-triage: safaritopic: tabs and windows
  w3c/webextensions#1100 · Filter by author H4M4CHi-ttr opened on Sep 26, 2026
  2

• Proposal: devtools.panels.ExtensionPanel.reportSearchResults()

  needs-triage: chromeneeds-triage: safariproposaltopic: devtools
  w3c/webextensions#1099 · Filter by author indura-perera-codimite opened on Sep 25, 2026
  2

• Inconsistency: sub-menu context inheritance

  follow-up: chromeimplemented: firefoximplemented: orionimplemented: safaritopic: menus
  w3c/webextensions#1090 · Filter by author carlosjeurissen opened on Sep 15, 2026
  2

• Inconsistency: browser.menus and browser.contextMenus aliasing

  follow-up: chromeimplemented: orionimplemented: safarineeds-triage: chromeneeds-triage: firefoxtopic: menus
  w3c/webextensions#1088 · Filter by author carlosjeurissen opened on Sep 15, 2026
  4

• Inconsistency: menus vs contextMenus

  follow-up: chromeneeds-triage: chromeneeds-triage: firefoxneeds-triage: safaritopic: menus
  w3c/webextensions#1086 · Filter by author bershanskiy opened on Sep 13, 2026
  1

• maxResults and engine limits

  neutral: safarisupportive: chromesupportive: firefox
  w3c/webextensions#1084 · Filter by author patrickkettner opened on Sep 11, 2026
  5

• Proposal: runtime.getContexts() should populate tabId for tab-specific side panel

  needs-triage: firefoxneeds-triage: safari
  w3c/webextensions#1081 · Filter by author bershanskiy opened on Sep 10, 2026
  1

• Improve browser<->extension contract for displaying extension UI

  needs-triage: chromeneeds-triage: firefoxneeds-triage: safaritopic: actiontopic: sidebar
  w3c/webextensions#1080 · Filter by author carlosjeurissen opened on Sep 10, 2026
  4

• Proposal: add runtime.MessageSender.windowId property

  proposalsupportive: chromesupportive: firefoxsupportive: safaritopic: tabs and windows
  w3c/webextensions#1077 · Filter by author carlosjeurissen opened on Sep 5, 2026
  2