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September 30th, 2025 13:53
Updates 9/30/25 - Firefox
Firefox Version 143.0.3, first offered to Release channel users on September 30, 2025
Fixed
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Adjusted the timing of the new drag-to-pin interaction cue for better reliability. (Bug 1989344)
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Fixed an issue that prevented some extensions from updating via the Add-ons Manager. (Bug 1984724)
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Fixed a regression that prevented Firefox View sections from collapsing/expanding as expected. (Bug 1989200)
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Addressed a WebExtensions storage issue that could cause Firefox to crash on startup with certain extensions installed. (Bug 1989840)
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Fixed an issue where opening an add-on's "Extension settings" from the post-install prompt could break the Customize tab and some keyboard shortcuts until restart. (Bug 1983869)
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Reduced long delays when loading certain websites while connected to networks that block UDP connections. (Bug 1980812)
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Various stability and security fixes.
 
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Available via the internal updater: Help / About Firefox


