[CRITICAL] phoenix-android.js preferences not being applied in IronFox 147 - privacy hardening inactive

BUG

phoenix-android.js appears to not be applied at all to IronFox 147.0 coming from Accrescent.

See #226 (closed). That's how this was discovered. This breaks a ton of anti-fingerprinting, adds a ton of telemetry back in.

Confirmation Checklist

  • I confirm that this issue occurs on the latest release of IronFox. You can check what the latest version is on the Releases page (https://gitlab.com/ironfox-oss/IronFox/-/releases).
  • I confirm that this issue occurs on the latest Nightly release of IronFox. You can find steps on how to find and install the latest Nightly release here.
  • I confirm that this issue has NOT already been reported on the GitLab issue tracker (https://gitlab.com/ironfox-oss/IronFox/-/issues) and/or the Codeberg issue tracker (https://codeberg.org/ironfox-oss/IronFox/issues).
  • I confirm that this issue is NOT already covered on the FAQ page (https://ironfoxoss.org/docs/faq/).
  • I confirm that this issue is NOT related to a website breakage or compatibility issue as described above.
  • I confirm that this issue does NOT occur on the latest release of Mozilla Firefox. You can find the latest APKs here: https://ftp.mozilla.org/pub/fenix/releases/.
  • I confirm that this issue does NOT occur on the latest release of Mozilla Firefox Nightly. You can find the latest APKs here: https://ftp.mozilla.org/pub/fenix/nightly/.

Android

  • Device: Pixel 8 Pro
  • Android version: 16
  • ROM: GrapheneOS, build number 2026011001

Version

IronFox version: IronFox 147.0 (Build #2016137775), 444ab875, GV: 147.0-20260113212102, AS: 147.0

Obtained through Accrescent app store.

First Version

IronFox 147.0

Add-ons

uBlock Origin, SponsorBlock, LibRedirect, Dark Reader, Video Background Play Fix.

Reason

All of the preferences set by phoenix-android.js are missing.

e.g. browser.phoenix.status.core does not exist, media.hls.enabled defaults to true, toolkit.telemetry.dap.helper.url defaults to https://dap.services.mozilla.com .

Reproduce

Created a brand new Android profile with no applications installed. Installed Accrescent from GrapheneOS's App Store. Installed IronFox 147.0 from Accrescent.

Edited Jan 15, 2026 by Anonymous Contributor
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