Firefox/Channels/Meetings/2026-08-20

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Channel Meeting Details

• Tuesdays at 10am and Thursdays at 7:30am Pacific Time
• Riot #release-drivers for backchannel
• Past meeting notes: https://wiki.mozilla.org/Firefox/Channels/Meetings

Video/Teleconference Details

• Zoom Meeting ID: 536 097 768
• https://mozilla.zoom.us/j/536097768
• +17207072699,,536097768# US
• Find your local number: https://zoom.us/u/agItTmqIu

REMEMBER

These notes are read by people who weren't able to attend the meeting. Please make sure to include links and context so they can be understood.

Attendees

RyanVM, Mira, dmeehan, oardelean, csasca, mboldan, jgibbs, epopescu, atrif, Aryx, dsmith, dveditz, dbarladeanu, tzsoldos

Schedule Update

• 154
  • Desktop 154.0 and Android Fenix/Focus 154.0 live @ 25% rollout
    • Holding Desktop until mitigation for incidents are complete and will rollout android to 100% today.
    • https://bugzilla.mozilla.org/show_bug.cgi?id=2065145 & https://bugzilla.mozilla.org/show_bug.cgi?id=2064411
    • also awaiting verdict on a high volume crash investigation https://bugzilla.mozilla.org/show_bug.cgi?id=2064648
  • Desktop and Android planned dot release scheduled for next week
    • gtb on 2026-08-24, go-live on 2026-08-25 after QA sign-off
  • Firefox iOS 154.1 scheduled to start phased rollout at 03:00 UTC on 2026-08-23
• 155
  • Desktop & Android 155.0b2 live @ 100%
    • Is Desktop update testing happening on this build?
      • (mboldan) No
  • Desktop 155.0b3 gtb tomorrow @ 100% rollout
  • Android 155.0b3 gtb tomorrow @ 99% rollout
    • Bumping to 100% pending QA sign-off
  • The deadline for Release Notes is 2026-08-26
  • Desktop/Android 155 Release Candidate builds on Aug 27, 2026
  • Firefox iOS 155.0 branches and Firefox iOS 155.0 gtb tomorrow
  • ESR gtb schedule post-Metronome
• 156
  • New cycle has started for Fx156
  • Merge Day and 156.0b1 build1 gtb 2026-08-27

Release quality metrics (Thursdays)

• No update for this meeting.

Desktop Stability

Nightly

crash incidence (% of users experiencing a crash): 1.94% (-0.09pp compared to previous week)

Beta

crash incidence: 2.35% (+0.06pp)

• Crash in [@ mozilla::dom::ServiceWorkerPrivate::ServiceWorkerPrivate]
  • https://bugzilla.mozilla.org/show_bug.cgi?id=2065105
  • low volume

Release

crash incidence: 1.09% (+0.01pp)

• Crash in [@ shutdownhang | RtlpWaitOnAddressWithTimeout | RtlpWaitOnAddress | RtlWaitOnAddress | WaitOnAddress]
  • https://bugzilla.mozilla.org/show_bug.cgi?id=2065113
  • generic crash signature which had been observed and fixed before, high crash volume since v153 - likely signature change
  • triage owner needinfoed
• Crash in [@ AsyncShutdownTimeout | profile-before-change | MonitorStore: Shutdown]
  • https://bugzilla.mozilla.org/show_bug.cgi?id=2065119
  • real volume unknown because reason mentions AI window
  • triage owner needinfoed
• Crash in [@ nsBlockFrame::RemoveFrame]
  • https://bugzilla.mozilla.org/show_bug.cgi?id=2065136
  • developer working on it

Mobile Stability

Fenix

• [release] crash in EMPTY: no crashing thread identified; no frame data available (Firefox for Android only)
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1245570
  • 5k reports/day
  • needinfoed triage owner
• [nightly] Crash in [@ java.lang.NullPointerException: at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java)]
  • https://bugzilla.mozilla.org/show_bug.cgi?id=2065098
  • regression which ships since Wednesday
  • triage owner needinfoed
• [nightly] Crash in [@ IPCError-browser | RecvWindowPostMessage RecvWindowPostMessage: unowned source]
  • https://bugzilla.mozilla.org/show_bug.cgi?id=2063905
  • medium frequency
  • has patch

QA

• Release 154 Windows migration testing completed. No concerns.

Nightly

• Nightly 156 new feature testing will start tomorrow.
• Nightly 156 Search testing started today.
• Nightly 156 WebRTC testing started today.

Beta

• Uplift verification for Beta 155 new features is in progress.

Mobile

• Android / Mira
  • Build Signoffs Fenix & Focus
    • Beta 155.0b1 build 2 - sign-off status GREEN
    • Beta 155.0b2 - sign-off status GREEN
  • Feature Testing
    • [QA-5545] Android LNA - Android 17 - Nightly 156 - sign-off status GREEN
• iOS
  • Build Signoffs
    • Firefox iOS 154.0 (75838) - Release Candidate 2- status [GREEN]
    • Firefox iOS 154.1 (75916) - Release Candidate 1 - status [GREEN]
  • Feature Testing
    • [QA-5295] - iOS - Nova Updates - testing in progress
    • [QA-5554] - Startpage as a search option on Android and iOS in countries AT, CH, DE, FR, and NL - test results sent Green

Roundtable & Special Topics

• Mozilla Wellness Day August 28