1.21.5b
Release build - 1.21.5b (2026-07-02)
Changed 1
- Update to Firefox 152.0.4
Fixed 2
- Fix overflowing addons not having context menus
- Fix copy, paste, undo, redo, and similar keyboard shortcuts not working inside macOS system dialogs such as the Save and Open panels
Security 1
- Address security advisory MFSA2026-62
Zen Stable Release
Security
New Features
- Updated to Firefox 152.0.4
Fixes
- Fixed overflowing addons not having context menus (#14382)
- Fixed copy, paste, undo, redo, and similar keyboard shortcuts not working inside macOS system dialogs such as the Save and Open panels.
- Other bug fixes and improvements.