Mozilla releases Firefox 151.0.2 with fixes for Split View and more

The latest bug-fixing update delivers ten patches for various bugs and crashes.

Mozilla has released a big bug-fixing update for Firefox 151. Following the release of version 151.0.1, which addressed bugs on certain Intel processors, Mozilla is delivering ten more fixes to resolve issues with Split View unexpectedly closing tabs, crashes on Windows with certain input methods, and more under-the-hood improvements.

Here is the changelog:

• Fixed an issue on macOS where smart cards and security keys could fail to load certificates automatically.
• Fixed an issue where adding another tab to an existing Split View could unexpectedly close it.
• Fixed an issue where Split View would close instead of switching tabs when using the "Switch to Tab" option from the address bar.
• Fixed a crash on Windows that occurred when using the Sogou input method to type Simplified Chinese.
• Fixed an issue where Firefox stopped caching new content once the disk cache was full, causing pages and resources to be re-downloaded from the network on every visit.
• Fixed an issue where some websites could render incorrectly or fail to load when they used JavaScript to insert WebKit-specific style rules.
• Fixed an issue where clicking and selecting text in some input fields and text areas did not work on pages that styled them with certain CSS rules.
• Fixed an issue where the up and down buttons on number input fields could overlap and hide the value when sites sized the field to fit its contents.
• Fixed an issue where sorting strings that include numbers could produce an incorrect order on some websites and web applications.
• Fixed an issue where dropdown menus would not open for "select" elements created inside an iframe and then moved into the parent page.

Firefox 151.0.2 is now available on Mozilla's FTP, and the update will be available to all users shortly. As for release notes, you will find them on the official website here. Firefox is available for download from the official website, the Microsoft Store, and Neowin's Software page.

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Posted Wednesday 27 May 2026 at 7:43 am AEST (my time).

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