Release Notes for Safari Technology Preview 204

Safari Technology Preview Release 204 is now available for download for macOS Sequoia beta and macOS Sonoma. 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: 283043@main…283691@main.

Accessibility

Resolved Issues

• Fixed VoiceOver focus to activate PDF form fields when it lands on them. (283281@main) (134522935)

CSS

New Features

• Added support for cross-document view-transitions. (283320@main) (133994557)
• Added preview support for line-clamp. (283233@main) (135369594)

Resolved Issues

• Fixed text-decoration-thickness to work in buttons. (283212@main) (118320835)
• Fixed skipping view transitions on hidden pages. (283084@main) (125017653)
• Fixed contrast between ButtonFace and ButtonText system colors in dark mode. (283284@main) (131996608)

Forms

Resolved Issues

• Fixed HTMLSelectElement.prototype.add with optgroup elements. (283080@main) (120553757)

JavaScript

Resolved Issues

• Fixed: Improved the TypeError message when a WeakMap constructor takes an iterable that yields invalid entry. (283199@main) (135333331)
• Fixed incorrect SyntaxError when destructuring let. (283217@main) (135353378)

Deprecations

• Removed obsoleted methods for Temporal.PlainTime and Temporal.PlainDateTime to align with specification changes. (283315@main) (135509670)

Service Workers

Resolved Issues

• Fixed Service Workers to support focusing a page that is being loaded. (283263@main) (135337772)

Web API

New Features

• Added support for the Cookie Store API. (283654@main) (135969444)

Resolved Issues

• Fixed scrollIntoView(...) for SVG elements. (283157@main) (135265918)

Web Driver

Resolved Issues

• Fixed Web Driver to use pointer origin rather than viewport origin for state location resolution. (283186@main) (128668986)

Web Extensions

New Features

• Added support for icon_variants in Web Extensions. (283118@main, 283219@main) (134885372)

Resolved Issues

• Fixed blob URL downloads failing to trigger from an extension. (283220@main) (78929424)
• Fixed including the extension’s icon in the commands menu item and prevented customization using System Settings. (283229@main) (135360504)

Web Inspector

Resolved Issues

• Fixed an issue where multi-line content in the Console prompt was not scrollable. (283412@main) (131756916)