Firefox 87.0 released

HarborFront

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Oct 9, 2016
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Already released. Get it from your internal updater

New​

  • You’ll encounter less website breakage in Private Browsing and Strict Enhanced Tracking Protection with SmartBlock, which provides stand-in scripts so that websites load properly.
  • To further protect your privacy, our new default HTTP Referrer policy will trim path and query string information from referrer headers to prevent sites from accidentally leaking sensitive user data.
  • The “Highlight All” feature on Find in Page now displays tick marks alongside your scrollbar that correspond to the location of matches found on that page.
  • We’re proud to announce full support for macOS built-in screen reader, VoiceOver.
  • We’ve added a new locale: Silesian (szl)

Fixed​

  • We’ve fixed several significant accessibility issues:
    • Video controls now have visible focus styling and video and audio controls are now keyboard navigable. (Bug 1681007)
    • HTML <meter> is now spoken by screen readers. (Bug 1460378)
    • Firefox now sets a useful initial focus in Add-ons Manager. (Bug 580537)
    • Firefox will now fire a name/description change event when aria-labelledby/describedby content changes. (Bug 493683)
  • Various security fixes.

Changed​

  • To prevent user data loss when filling out forms, we’ve disabled the Backspace key as a navigation shortcut for the back navigation button. To re-enable the Backspace keyboard shortcut, you can change the about:config preference browser.backspace_action to 0. You can also use the recommended Alt + Left arrow (Command + Left arrow on Mac) shortcut instead.
    Firefox keyboard shortcuts
  • We've removed items from the Library menu that weren't used often or have other access points in the browser: Synced tabs, Recent highlights, and Pocket list.
  • We've simplified the Help menu by reducing redundant items, such as those that point to Firefox support pages that can also be accessed via the Get Help item.
 

HarborFront

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Oct 9, 2016
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Now supports Multi Picture-in-Picture 👌
Already supported in FF v86.0

 

silversurfer

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Aug 17, 2014
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New Feature: SmartBlock

To reduce this breakage, Firefox 87 is now introducing a new privacy feature we are calling SmartBlock. SmartBlock intelligently fixes up web pages that are broken by our tracking protections, without compromising user privacy.

SmartBlock does this by providing local stand-ins for blocked third-party tracking scripts. These stand-in scripts behave just enough like the original ones to make sure that the website works properly. They allow broken sites relying on the original scripts to load with their functionality intact.

The SmartBlock stand-ins are bundled with Firefox: no actual third-party content from the trackers are loaded at all, so there is no chance for them to track you this way. And, of course, the stand-ins themselves do not contain any code that would support tracking functionality.

In Firefox 87, SmartBlock will silently stand in for a number of common scripts classified as trackers on the Disconnect Tracking Protection List. Here’s an example of a performance improvement:
Side by side comparison: before and after SmartBlock.
An example of SmartBlock in action. Previously (left), the website tiny.cloud had poor loading performance in Private Browsing windows in Firefox because of an incompatibility with strong Tracking Protection. With SmartBlock (right), the website loads properly again, while you are still fully protected from trackers found on the page.
 

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