# Mullvad Browser 16.0a8

- Product: Mullvad Browser (https://whatsnew.fyi/product/mullvad-browser)
- Vendor: Mullvad VPN
- Date: 2026-07-02
- Version: 16.0a8
- Original notes: https://github.com/mullvad/mullvad-browser/releases/tag/16.0a8
- Permalink: https://whatsnew.fyi/product/mullvad-browser/releases/16.0a8
- Labels: Pre-release; Platforms: Desktop

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **changed** — Updated Firefox to 152.0a1
- **changed** — Updated NoScript to 13.6.25.90301984
- **fixed** — Make sure desktop IP Protection is disabled on desktop
- **removed** — Drop browser.display.use_system_colors from preference list
- **fixed** — Remove unused pref privacy.partition.network_state
- **changed** — Use context-fill for about-wordmark.svg
- **changed** — Switch colours in letterboxing setting icons to match the tab-alignment icons
- **fixed** — Several errors about EngineProcess.sys.mjs in 152
- **fixed** — Wrong letterboxing background in 152
- **fixed** — Resistfingerprinting not available in appearance.mjs in 152
- **fixed** — ReportBrokenSite startup error in 152
- **fixed** — Potential runtime errors in the search service when changing JS status
- **fixed** — Re-add missing changes to settings after 151/152 rebase
- **security** — Cross-site oracle via worklet rejection error in Safer Mode
- **changed** — Disable XSLT for 16.0
- **fixed** — Error in about:preferences due to ipprotection missing
- **fixed** — ABI::Windows::Graphics::Capture::IID_IGraphicsCaptureSession2 is used again in wgc_capture_session.cc on Windows
- **fixed** — Bundled fonts are broken on macOS when the GPU process is enabled
- **fixed** — Crash in libfontconfig.so.1 after users upgraded to fontconfig 2.18.0 on Linux

* All Platforms
   * Updated Firefox to 152.0a1
   * Updated NoScript to 13.6.25.90301984
   * Bug 44528: Make sure desktop IP Protection is disabled on desktop [tor-browser]
   * Bug 44795: Revert BB 27604 patch as not needed anymore [tor-browser]
   * Bug 44857: Drop `browser.display.use_system_colors` from our preference list [tor-browser]
   * Bug 44896: Review Mozilla 2030929: Remove unused pref privacy.partition.network_state [tor-browser]
   * Bug 44955: Use `context-fill` for `about-wordmark.svg` [tor-browser]
   * Bug 44956: Switch colours in letterboxing setting icons to match the tab-alignment icons [tor-browser]
   * Bug 45016: Several errors about EngineProcess.sys.mjs in 152 [tor-browser]
   * Bug 45017: Wrong letterboxing background in 152 [tor-browser]
   * Bug 45018: resistfingerprinting not available in appearance.mjs in 152 [tor-browser]
   * Bug 45019: ReportBrokenSite startup error in 152 [tor-browser]
   * Bug 45037: Potential runtime errors in the search service when changing JS status [tor-browser]
   * Bug 45043: Re-add missing changes to settings after 151/152 rebase [tor-browser]
   * Bug 45047: Cross-site oracle via worklet rejection error in Safer Mode [tor-browser]
   * Bug 45072: Disable XSLT already for 16.0 [tor-browser]
   * Bug 45083: Error in about:preferences due to ipprotection missing [tor-browser]
 * Windows
   * Bug 552: ABI::Windows::Graphics::Capture::IID_IGraphicsCaptureSession2 is used again in wgc_capture_session.cc [mullvad-browser]
 * macOS
   * Bug 44728: Bundled fonts are broken on macOS when the GPU process is enabled [tor-browser]
 * Linux
   * Bug 45048: Backport Bugzilla 2041887: Crash in [@ libfontconfig.so.1] after users upgraded to fontconfig 2.18.0 [tor-browser]
##### Build System
   * All Platforms
     * Bug 41802: Remove the tor daemon requirement for signing [tor-browser-build]
     * Bug 41809: Update toolchains for Firefox 152 [tor-browser-build]
     * Bug 41813: Disable build artifacts in `make generate_gradle_dependencies_list-geckoview` [tor-browser-build]
     * Bug 41821: Update gpg subkeys for boklm [tor-browser-build]
     * Bug 41823: Add versions information to the toolchain list update [tor-browser-build]
     * Bug 41827: Update morgan's keychain with renewed key [tor-browser-build]