6.7.0-beta.2- Legacy extensions and Tree Tabs improvements

Waterfox 6.7.0 beta 2 expands testing for legacy extensions and Linux packaging while bring tree tabs reliability fixes.

New

• Added initial support for restartless legacy extensions using install.rdf, bootstrap.js, and compatible chrome.manifest entries. Full support will be restored soon.
• Enabled publication of prerelease x86_64 DEB and RPM packages through the Waterfox OBS repositories.

Changed

• Updated Qwant’s regional availability, search parameters, and branding.
• Disabled automatic enforcement of soft-blocked add-ons. Hard-block protections remain active, including for unsigned legacy extensions.
• Disabled automatic generation of HTTP Idempotency-Key headers by default.

Fixed

• Significantly improved tree tabs:
  • Improved session restoration, undo-close handling, and migration from legacy tree tab settings.
  • Corrected child-tab placement and tree ordering.
  • Fixed pinning, collapsing, subtree depth limits, and parent-closing behaviour.
  • Fixed cross-window drag-and-drop and tab moves initiated by extensions or context menus.
  • Prevented selected tabs from remaining hidden inside collapsed trees.
  • Refreshed expand and collapse controls with RTL and reduced-motion support.
• Fixed Chase website compatibility when Waterfox’s built-in content blocker is enabled.
• Fixed selected Waterfox colour palettes sometimes being overwritten by a later default-theme update.

Known Issues

• Privileged extensions may not be fully supported.
• Trying to open a link in a new private tab via the context menu opens said link in a normal tab.