Waterfox Files

New

• Auto-hide vertical tabs. Keep the sidebar hidden until you move your mouse to the edge of the window.
• Prevent tabs from widening when audio plays. A new option under Settings → Appearance → Tab bar lets you prevent audio indicators from changing tab widths.

Fixes

• Restored country flag emoji on Windows.
• Fixed a problem that prevented older extensions, including Roomy Bookmarks Toolbar redux and Tab Mix Plus, from loading.
• Fixed an issue where every vertical tab showed the active tab highlight. Only the selected tab is now highlighted.
• The missing options to fade unloaded tabs and grey out their icons have been restored in the Nova and Proton styles.
• Tab close buttons now remain accessible when the vertical sidebar is narrowed.
• Fixed issues where the New Private Tab button made the sidebar too wide or remained visible when disabled.
• Bookmark menu spacing options now apply to the Menu Bar’s Bookmarks dropdown.
• The search engine selector no longer retains rounded corners when square buttons are enabled.
• Fixed an issue where typing into a custom new tab could leave part of the previous address behind.
• Corrected the remaining Firefox references in Waterfox branding, including the “Customize Waterfox Home” button.
• New backup folders are now named Restore Waterfox. Backup folders created previously are still supported.
• Fixed conflicting keyboard shortcuts in the French right click menu.

Improvements

• Improved compatibility with JPEG XL images.
• Restored the standard new tab page layout while keeping recommended stories and sponsored content disabled.

Security

Waterfox 6.7.3 incorporates the security updates covered by Mozilla Foundation Security Advisory 2026-93.

[!NOTE] The advisory will be available once Mozilla publishes it.