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# Safari Technology Preview 204 Release Notes

Learn about the latest web technology updates in Safari Technology Preview: Accessibility, CSS, Forms, JavaScript, Service Workers, Web API, Web Driver, Web Extensions, and Web Inspector.

## Overview

[Safari Technology Preview](https://webkit.org/blog/6017/introducing-safari-technology-preview/) Release 204 is now [available for download](https://developer.apple.com/safari/resources/) 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](https://github.com/WebKit/WebKit/compare/e3fcc5543b97e63cdd7dab7c6accbed7cbb6991d...ec36ff6ad402efc34d9bfee8aad4b7d26b1cc67d).

### Accessibility

#### Resolved Issues

- Fixed VoiceOver focus to activate PDF form fields when it lands on them. ([283281@main](https://commits.webkit.org/283281@main))  (134522935)

### CSS

#### New Features

- Added support for cross-document view-transitions. ([283320@main](https://commits.webkit.org/283320@main))  (133994557)
- Added preview support for `line-clamp`. ([283233@main](https://commits.webkit.org/283233@main))  (135369594)

#### Resolved Issues

- Fixed `text-decoration-thickness` to work in buttons. ([283212@main](https://commits.webkit.org/283212@main))  (118320835)
- Fixed skipping view transitions on hidden pages. ([283084@main](https://commits.webkit.org/283084@main))  (125017653)
- Fixed contrast between `ButtonFace` and `ButtonText` system colors in dark mode. ([283284@main](https://commits.webkit.org/283284@main))  (131996608)

### Forms

#### Resolved Issues

- Fixed `HTMLSelectElement.prototype.add` with `optgroup` elements. ([283080@main](https://commits.webkit.org/283080@main))  (120553757)

### JavaScript

#### Resolved Issues

- Fixed: Improved the TypeError message when a WeakMap constructor takes an iterable that yields invalid entry. ([283199@main](https://commits.webkit.org/283199@main))  (135333331)
- Fixed incorrect SyntaxError when destructuring `let`. ([283217@main](https://commits.webkit.org/283217@main))  (135353378)

#### Deprecations

- Removed obsoleted methods for `Temporal.PlainTime` and `Temporal.PlainDateTime` to align with specification changes. ([283315@main](https://commits.webkit.org/283315@main))  (135509670)

### Service Workers

#### Resolved Issues

- Fixed Service Workers to support focusing a page that is being loaded. ([283263@main](https://commits.webkit.org/283263@main))  (135337772)

### Web API

#### New Features

- Added support for the Cookie Store API. ([283654@main](https://commits.webkit.org/283654@main))  (135969444)

#### Resolved Issues

- Fixed `scrollIntoView(...)` for SVG elements. ([283157@main](https://commits.webkit.org/283157@main))  (135265918)

### Web Driver

#### Resolved Issues

- Fixed Web Driver to use pointer origin rather than viewport origin for state location resolution. ([283186@main](https://commits.webkit.org/283186@main))  (128668986)

### Web Extensions

#### New Features

- Added support for `icon_variants` in Web Extensions. ([283118@main](https://commits.webkit.org/283118@main), [283219@main](https://commits.webkit.org/283219@main))  (134885372)

#### Resolved Issues

- Fixed blob URL downloads failing to trigger from an extension. ([283220@main](https://commits.webkit.org/283220@main))  (78929424)
- Fixed including the extension’s icon in the commands menu item and prevented customization using System Settings. ([283229@main](https://commits.webkit.org/283229@main))  (135360504)

### Web Inspector

#### Resolved Issues

- Fixed an issue where multi-line content in the Console prompt was not scrollable. ([283412@main](https://commits.webkit.org/283412@main))  (131756916)

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