official release 21-06-11 What’s New in Firefox The latest version of Firefox has the following changes: Added support for CSS animations The Do-Not-Track header preference has been moved to increase discoverability Tuned HTTP idle connection logic for increased performance Improved canvas, JavaScript, memory, and networking performance Improved standards support for HTML5, XHR, MathML, SMIL, and canvas Improved spell checking for some locales Improved desktop environment integration for Linux users WebGL content can no longer load cross-domain textures Background tabs have setTimeout and setInterval clamped to 1000ms to improve performance Fixed several stability issues Fixed several security issues
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