Apple Releases Safari Technology Preview 192 – Brings Bug Fixes and Performance Improvements

Apple has released Safari Technology Preview 192, the latest version of their developer preview web browser. The preview version of Apple’s popular browser offers developers and other interested users the ability to try out features that may or may not, debut in future public release versions of Safari.

‌Safari Technology Preview‌ 192 includes fixes and updates for Authentication, CSS, Editing, JavaScript, Media, Rendering, Web API, and Web Extensions.

The current ‌Safari Technology Preview‌ release is compatible with machines running macOS Ventura and macOS Sonoma.

Overview

Safari Technology Preview Release 192 is now available for download for macOS Sonoma and macOS Ventura. If you already have Safari Technology Preview installed, you can update it in System Settings under General → Software Update.

This release includes WebKit changes between: 276247@main…276863@main.

Authentication

Resolved Issues

• Fixed setting the cancel flag once the cancel completes regardless of a subsequent request occurring. (276368@main) (124727713)

CSS

New Features

• Added support for View Transitions. (276426@main) (123128491)

Resolved Issues

• Fixed setting white-space to a non-default value dynamically on a whitespace or a new line. (276277@main) (92559818)
• Fixed the proximity calculation for implicit @scope. (276345@main) (124640124)
• Fixed the Grid track sizing algorithm logical height computation avoid unnecessary grid item updates. (276633@main) (124713418)
• Fixed any @scope limit making the element out of scope. (276359@main) (124956673)
• Fixed the contrast of Menu and MenuText system colors. (276597@main) (125270664)
• Fixed keeping the shorthand value for CSS gap as-is in serialized and computed values. (276794@main) (125335787)

Deprecations

• Removed WEBKIT_KEYFRAMES_RULE and WEBKIT_KEYFRAME_RULE in CSSRule. (276264@main) (97084520)
• Removed the SVGAnimateColorElement interface. (276683@main) (122586568)

Editing

Resolved Issues

• Fixed certain text being duplicated or misplaced. (276317@main) (123642870)
• Fixed word completion suggestion interfering with a website’s suggestion results. (276344@main) (124727588)

JavaScript

Resolved Issues

• Fixed Object.groupBy and Map.groupBy to work for non-objects. (276736@main) (125485685)
• Fixed Array.fromAsync to not call the Array constructor twice. (276752@main) (125509304)

Media

New Features

• Added support for MSE in workers. (276389@main) (123052315)

Resolved Issues

• Fixed scrolling for an element when a video element with pointer-events: none is placed over it. (276807@main) (118936715)
• Fixed allowing a video’s currentTime to be further than the gap’s start time. (276761@main) (124186726)
• Fixed sampleRate and numberOfChanges to be required and non-zero in a valid AudioEncoderConfig. (276413@main) (125107934)
• Fixed media elements appending the same media segment twice. (276821@main) (125386530)

Rendering

Resolved Issues

• Fixed adjusting the size of the scrollable area when changing betwen non-overlay and overlay scrollbars. (276439@main) (117507268)
• Fixed flickering when showing a layer on a painted background for the first time by avoiding async image decoding. (276513@main) (117533495)
• Fixed line breaking before or between ruby sequences. (276353@main) (122663646)

Web API

New Features

• Added support for URL.parse(). (276656@main) (125376520)
• Added support for shadowRootDelegatesFocus and shadowRootClonable to <template>. (276631@main) (125401993)

Resolved Issues

• Fixed URL text fragment directives not fully stripped from JavaScript. (276370@main) (107326333)
• Fixed inserting a <picture> element displaying the same image twice. (276754@main) (123795045)

Web Extensions

New Features

• Updated to use the web extension architecture in open-source WebKit code. Web extension authors are encouraged to test your extensions and report issues. (123908710)

Web Inspector

Resolved Issues

• Fixed console clearing unexpectedly when Web Inspector reopens. (276705@main) (124171190)

While the preview is intended for use by developers and advanced users, to provide Apple with feedback on the development of the Safari browser, it can be run side-by-side with the release version of Safari. The app doesn’t require a developer account to download and install. For more information, visit the Safari Technology Preview website.