Apple has released Safari Technology Preview 189, 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 189 includes fixes and updates for CSS, HTML, SVG, Web API, Web Inspector, WebAuthn, WebGL, and WebRTC.
The current Safari Technology Preview release is compatible with machines running macOS Ventura and macOS Sonoma.
Overview
Safari Technology Preview Release 189 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: 273602@main…274066@main.
CSS
New Features
- Added support for
light-dark()function for color values. (273634@main) (117033939)- Added support for
@starting-style. (273740@main) (121918611)Resolved Issues
- Fixed named at-rule container getting skipped when the container is named in a
:selector. (273987@main) (120428386)host - Fixed the name for a
::pseudo-element in a container query getting resolved against the wrong scope. (274050@main) (122224135)slotted Deprecations
- Removed
:-webkit-full-screen-ancestorpseudo-class. (273620@main) (100782937)- Removed
:-webkit-full-screen-controls-hiddenpseudo-class. (273619@main) (121323330)- Removed
:-webkit-full-page-mediapseudo-class. (273618@main) (121752962)- Removed
:-webkit-full-screen-documentpseudo-class. (273639@main) (121816310)HTML
Resolved Issues
- Fixed “about:blank”
documentinitialization. (278830@main) (97689906).referrer - Fixed parsing a self-closing SVG script element. It now successfully executes. (273697@main) (121887875)
JavaScript
Resolved Issues
- Fixed throwing a
RangeifError Setmethods are called on an object with negativesizeproperty. (274009@main) (121310940)- Fixed
eval()function from another realm to not cause a directevalcall. (273782@main) (121546048)- Fixed
eval()call with...spreadsyntaxt to be a direct call. (273788@main) (121547890)- Fixed programming style for bitwise and in setExpectionPorts. (273960@main) (122138733)
Rendering
Resolved Issues
- Fixed Greek uppercase transforms failing for some characters. (274036@main) (90364897)
- Fixed lingering boxes with
content-visibility: hidden. (117916396)- Fixed: FIXME: Fixed graphics artifacts when scrolling a Heroku app. (273999@main) (120373474)
- Fixed
align-contentandjustify-contenton scroll containers causing overflowing content to become inaccessible. (273737@main) (121366949)- Fixed a line break at gaps between two inline elements in a container with
white-space: nowrap. (121859917)- Fixed a floating element causing the latter half of a hyphenated word to disappear. (273836@main) (121889487)
- Fixed cropped first letter for custom fonts that report negative advance width. (121891210)
SVG
Resolved Issues
- Fixed SVG title to have
display: noneas the default UA style rule. (273991@main) (122185838)Web API
Resolved Issues
- Fixed
historyand.push State() historyto ignore the.replace State() titleargument. (273650@main) (75695791)- Fixed
langattribute in no namespace to only apply to HTML and SVG elements. (273726@main) (117795695)- Fixed the spelling of
clonable. (274063@main) (121516711)Deprecations
- Removed
whichfromKeyboard. (273701@main) (106580687)Event Web Inspector
New Features
- Added a Media details panel to Web Inspector when selecting a
<video>or<audio>element in the Elements tab. (273777@main) (118865793)Resolved Issues
- Fixed font sizes in the Audits tab. (273615@main) (76162927)
WebAuthn
Resolved Issues
- Fixed
navigatorrejects with “NotAllowedError: Operation Failed” after a conditional UI request is aborted. (273918@main) (109936742).credentials .create() WebGL
New Features
- Enabled support for
EXT,_texture _mirror _clamp _to _edge WEBGL, and_render _shared _exponent WEBGL. (273645@main) (121835897)_stencil _texturing WebRTC
New Features
- Added support for missing WebRTC stats. (273643@main) (121594743)
Resolved Issues
- Fixed a bug that prevented HTML canvas elements from always being marked dirty on initialization. This could cause some video effects to have choppy animations. (121257960)
- Fixed VideoTrackGenerator writer to close when its generator track (and all its clones) are stopped. (273778@main) (121835553)
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.
