--- title: Safari Technology Preview 189 Release Notes framework: safari-technology-preview-release-notes role: article role_heading: Article path: safari-technology-preview-release-notes/stp-release-189 --- # Safari Technology Preview 189 Release Notes Learn about the latest web technology updates in Safari Technology Preview: CSS, HTML, JavaScript, Rendering, SVG, Web API, Web Inspector, WebAuthn, WebGL, and WebRTC. ## Overview 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 :host selector. (273987@main) (120428386) Fixed the name for a ::slotted pseudo-element in a container query getting resolved against the wrong scope. (274050@main) (122224135) Deprecations Removed :-webkit-full-screen-ancestor pseudo-class. (273620@main) (100782937) Removed :-webkit-full-screen-controls-hidden pseudo-class. (273619@main) (121323330) Removed :-webkit-full-page-media pseudo-class. (273618@main) (121752962) Removed :-webkit-full-screen-document pseudo-class. (273639@main) (121816310) HTML Resolved Issues Fixed “about:blank” document.referrer initialization. (278830@main) (97689906) Fixed parsing a self-closing SVG script element. It now successfully executes. (273697@main) (121887875) JavaScript Resolved Issues Fixed throwing a RangeError if Set methods are called on an object with negative size property. (274009@main) (121310940) Fixed eval() function from another realm to not cause a direct eval call. (273782@main) (121546048) Fixed eval() call with ...spread syntaxt 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-content and justify-content on 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: none as the default UA style rule. (273991@main) (122185838) Web API Resolved Issues Fixed history.pushState() and history.replaceState() to ignore the title argument. (273650@main) (75695791) Fixed lang attribute in no namespace to only apply to HTML and SVG elements. (273726@main) (117795695) Fixed the spelling of clonable. (274063@main) (121516711) Deprecations Removed which from KeyboardEvent. (273701@main) (106580687) Web Inspector New Features Added a Media details panel to Web Inspector when selecting a