Firefox/Channels/Meetings/2021-08-17

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

Attendees

RyanVM, Aryx, JR, Kevin, Dianna, jcristau, dveditz, telin

Schedule Update

• 91.0.1 shipped, updates are enabled at 100%
• likewise 91.0.1esr
• fenix and focus 91.2.0 are on the play store at 99%

• possible new fenix/focus release for https://bugzilla.mozilla.org/show_bug.cgi?id=1725508

• Fenix 92.0.0-beta.3 shipped @ 25% on Friday to address urgent stability issue
• Fenix 92.0.0-beta.4 shipped Monday @ 100%
• Desktop & DevEdition 92.0b5 gtb today

Release quality metrics (Tuesdays)

Desktop Stability

Nightly

mc2 crash rate:1.78 (-0.09 compared to previous week), crash incidence: 1.54% (-0.40pp)

mc1 crash rate: 5.95 crashes/1k usage hours

• stylesheet crash (8% of Nightly crashes)
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1719963
  • fix should reach mozilla-central today

Beta

mc2 crash rate: 2.01 (+0.28), crash incidence: 1.92% (+0.86pp)

mc1 crash rate: 4.38

Release

mc2 crash rate: 1.62 (+0.35), crash incidence: 0.83% (-0.08pp)

mc1 crash rate: 2.28

• [@ webrender::render_api::RenderApi::add_document_with_id]
  • https://bugzilla.mozilla.org/show_bug.cgi?id=1707475
  • frequency multiplied compared to Gecko 90
  • sotaro needinfoed for investigation

• Crash in [@ shutdownhang | NtFlushBuffersFile] - frequency increasing for unknown reasons
• https://bugzilla.mozilla.org/show_bug.cgi?id=1705360

Mobile Stability

Fenix

• release looks good - https://sql.telemetry.mozilla.org/queries/75521/source#188520
• beta 2 had a migration crash that we stopped the release - https://github.com/mozilla-mobile/fenix/issues/20830
• beta 3 resolves this

Focus

• 91.1.2 shipped to address new topcrash

QA

Nightly

Aurora / Dev Edition

Beta

Mobile

Action items

Feature Status Review

• Firefox 92
  • One challenged feature Support of XFA PDF.js. Slipped from Fx91 due to a11y compat. Forecast officially remains Fx92 but could slip further. Lead engineer on PTO and no confident forecast for remaining blocker; https://bugzilla.mozilla.org/show_bug.cgi?id=1723615
• Firefox 93
  • Building Feature list. Some layout features inbound.
  • All features appear to be on track.

SUMO Report

• Images not rendered in Fx 91 Android 5-6: https://github.com/mozilla-mobile/fenix/issues/20862
• MacOS high contrast seems to have issues with transparency and inability to use dark mode: https://bugzilla.mozilla.org/show_bug.cgi?id=1725032
  • looks like several issues submitted recently https://bugzilla.mozilla.org/buglist.cgi?query_format=specific&order=changeddate%20desc%2Cbug_id%20desc&chfieldto=Now&chfieldfrom=2021-01-01&content=%22High%20Contrast%20Mode%22&list_id=15804087
    • Most not regressions but we are following system settings more strickly, more about users understanding how to turn it off. Also general bugs with high contracts got more visibility.

Roundtable & Special Topics

Post-Mortem (Tues 2wks from GA Release)