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Safari Technology Preview 232 Release Notes

Learn about the latest web technology updates in Safari Technology Preview: CSS, JavaScript, Media, Rendering, SVG, Storage, Web API, and Web Inspector.

Overview

Safari Technology Preview Release 232 is now available for download for macOS Tahoe and macOS Sequoia. 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: 301766@main…302449@main.

CSS

New Features

  • Added support for allowing positioned boxes in scrollable containing blocks to overflow along scrollable directions. (302259@main) (162722820)

  • Added support for flip-x and flip-y options in position-try-fallback for CSS Anchor Positioning. (302057@main) (163282036)

Resolved Issues

  • Fixed handling of padding and margins for flex and grid layouts across all writing modes. (301814@main) (71046552)

  • Fixed getComputedStyle("top") to correctly resolve percentage values for absolutely positioned elements inside inline containers. (302090@main) (161390162)

  • Fixed an infinite style resolution loop when a position-try box was inside a display: none subtree. (302254@main) (161570947)

  • Fixed width, height, min-width, min-height, max-width and max-height to apply CSS zoom at used-value time. (302241@main) (161848512)

  • Fixed CSS zoom to scale <iframe> element contents. (302097@main) (162314059)

  • Fixed getBoundingClientRect and getClientRects to return scaled lengths according to CSS zoom instead of unscaled values, aligning with the CSS Viewport specification. (301806@main). (162325730)

  • Fixed scrolling behavior so that scrollRectToVisible() can bring fixed anchor-positioned boxes outside the viewport into view, improving keyboard navigation. (302368@main) (162378346)

  • Fixed an issue where @font-face and FontFace.family failed when the font family name contained spaces, ensuring the family name is now treated as a plain string instead of being parsed. (301793@main) (162637501)

  • Fixed top, left, right, and bottom to apply CSS zoom at used-value time (302102@main) (162663056)

  • Fixed margin to apply CSS zoom at used-value time. (301965@main) (162907254)

  • Fixed evaluation of calc() expressions to correctly apply the used zoom factor to length values, ensuring properties like line-height and box dimensions scale properly. (301968@main) (163141549)

  • Fixed an issue where calc(em) values for unzoomed properties were incorrectly adjusted. (302041@main) (163267333)

  • Fixed position-area normal alignment to correctly align toward the non-auto inset when only one inset is auto. (302299@main) (163317238)

  • Fixed incorrect underline positioning for text-decoration when inline box sides are trimmed. (302435@main) (163858721)

JavaScript

Resolved Issues

  • Fixed Intl.DateTimeFormat to throw a RangeError for legacy non-IANA timezones, aligning behavior with TC39 standards. (302447@main) (156857252)

Media

Resolved Issues

  • Fixed: Aligned with other browsers by dispatching enter and exit events on TextTrackCue and VTTCue with no track. (301836@main) (160195643)

  • Fixed an issue where the mute button disappeared in macOS inline videos with adjustable sizes. (301896@main) (162897286)

Rendering

Resolved Issues

  • Fixed over-aggressive clipping of child layers in multicolumn layouts to prevent visual overflow issues with position: relative elements and transform:scale() text. (302249@main) (126413036)

  • Fixed unreadable Scroll-to-Text-Fragment highlights on dark pages. (301930@main) (126539910)

  • Fixed an issue where positioned, transformed, or opacity-altered <img> elements with HDR JPEG gainmaps would incorrectly render in SDR. (302200@main) (156858374)

SVG

Resolved Issues

  • Fixed animation of the stop-color attribute on <stop> elements.(302163@main) (109823555)

Storage

Resolved Issues

  • Fixed an issue where IndexedDB databases might have mismatched metadata version and database name encoding format. (302055@main) (163219457)

Web API

Resolved Issues

  • Fixed event ordering and committed promise timing for intercepted Navigation API traverse navigations. (302418@main) (161445256)

  • Fixed the processing order of Trusted Types for DOM attribute setting. (302272@main) (162143148)

  • Fixed NavigateEvent to correctly fire an AbortSignal when a navigation is aborted. (302591@main) (163957784)

  • Fixed NavigateEvent.sourceElement to correctly reference elements from different browsing contexts. (302504@main) (163962362)

Web Inspector

Resolved Issues

  • Fixed an issue where CSS properties added to new rules were not applied and were marked as invalid. (302301@main) (103548968)

  • Fixed an issue in the Console where the count of identical consecutive messages could be wrong. (301917@main) (162612099)

See Also

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