Apple Releases Safari Technology Preview 193 – Brings Bug Fixes and Performance Improvements

Apple has released Safari Technology Preview 193, 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 193 includes fixes and updates for Accessibility, CSS, Forms, JavaScript, Rendering, Web API, and Web Inspector.

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

Overview

Safari Technology Preview Release 193 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: 276610@main…277149@main.

Accessibility

Resolved Issues

• Fixed hidden elements targeted by aria-labelledby to expose their entire subtree text, not just their direct child text. (276864@main) (125634439)
• Fixed accessible name computation for elements with visibility: visible inside a container with visibility: hidden. (277004@main) (125738704)

CSS

Resolved Issues

• Fixed the Grid track sizing algorithm logical height computation avoid unnecessary grid item updates. (276633@main) (124713418)
• Fixed the style adjuster for @starting-style incorrectly invoking with a null element. (276993@main) (125837628)

Forms

Resolved Issues

• Fixed the value attribute not getting displayed in an input element with type="email" and the multiple attribute. (276895@main) (125221858)

JavaScript

Resolved Issues

• Fixed inconsistent output of Function.prototype.toString for accessor properties. (276904@main) (125739577)

Rendering

Resolved Issues

• Fixed intrinsic inline size calculators to account for whitespace before an empty child with nonzero margins. (276875@main) (122586712)
• Fixed overlapping elements with flex box when height: 100% is applied on nested content. (276880@main) (125572851)
• Fixed block containers that are scroll containers to default to unsafe alignment. (276929@main) (125742095)

Web API

New Features

• Added support for PopStateEvent’s hasUAVisualTransition. (277001@main) (125849073)

Resolved Issues

• Fixed cloning of ShadowRoot nodes following a DOM Standard clarification. (277066@main) (125917138)

Web Inspector

Resolved Issues

• Fixed Console and code editor completion not auto-scrolling the suggestion into view. (277034@main) (124979790)
• Fixed search in the DOM tree view unexpectedly chaning the text display. (277073@main) (125797803)

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.