Release Notes for Safari Technology Preview 171

Safari Technology Preview Release 171 is now available for download for macOS Monterey 12.3 or later and macOS Ventura.


This content originally appeared on WebKit and was authored by WebKit

Safari Technology Preview Release 171 is now available for download for macOS Monterey 12.3 or later and macOS Ventura. If you already have Safari Technology Preview installed, you can update it in the Software Update pane of System Preferences on macOS Monterey, or System Settings under General → Software Update on macOS Ventura.

This release includes WebKit changes between: 263538@main…264301@main.

Web Inspector

  • Console tab
    • Added showing the target of a WeakRef (264171@main)
    • Fixed timestamps taking up different amounts of space (264161@main)
  • Sources tab
    • Fixed Step Over behaving like resume when stepping over a function with a falsy conditional breakpoint (264160@main)
  • Storage tab
    • Fixed truncated localStorage editing giving the illusion of a proper edit and the truncated string being saved (264166@main)
  • Fixed popovers so that only one can be displayed at a time (264159@main)

CSS

  • Added support for @font-face { src: tech() } and @supports font-tech() (263725@main)
  • Added support for @font-face size-adjust descriptor (263604@main)
  • Fixed ascent for flex items that are scroll containers to be clamped to the border box (263974@main)
  • Fixed text-shadow and box-shadow with currentcolor (264120@main)
  • Fixed the containing block for items in a masonry columns grid to be the logical width of the grid’s content box (264011@main)
  • Fixed not adding extra grid gap at the bottom of masonry rows (263657@main)
  • Fixed computing masonry item offsets (263709@main)
  • Fixed image-set to accept zero resolution and clamp negative resolutions used in calc expressions (264298@main)
  • Fixed container query length units to use the content box instead of the border box (263595@main)
  • Fixed CSS Masonry Layout to ensure grid size updates on resize (263712@main)
  • Fixed overflow: clip fails when intrusive float is present (264101@main)
  • Removed parsing support of left and right values for caption-side (264262@main)
  • Renamed text-box-trim value normal to none (263702@main)
  • Renamed leading-trim to text-box-trim to match the latest spec (263587@main)
  • Renamed text-edge to text-box-edge to match the latest spec (263612@main)
  • Fixed the bug that @supports selector() fails for all -webkit- prefixed pseudo elements (264090@main)

CSS Counter Styles

Web Animations

Rendering

  • Fixed images with decoding="async" flickering while zooming in (264433@main)
  • Fixed handling multi-column intrinsic inline-size changes (264292@main)
  • Fixed SVG use element doesn’t render if it references a subsequent element after a style resolution (264085@main)
  • Fixed alt texts rendered horizontally in vertical writing mode (263776@main)
  • Fixed OffscreenCanvas rendering hiding the border from the element (263731@main)
  • Complex text path: Make tab glyph invisible after advancing (263929@main)
  • Fixed text not wrapping in a nested grid (264252@main)
  • Changed to respect style containment on list items (264273@main)
  • Fixed negative shadow repaint issue (263899@main)
  • Fixed width of textarea with overflow hidden including scrollbar thickness (264095@main)
  • Fixed textarea’s logical height with overflow: auto to not include scrollbar-thickness (264251@main)

JavaScript

  • Cached default Intl NumberFormat (264057@main)
  • Cached lookups of ProxyObject’s traps (263944@main)
  • Changed to not use Strong<> in VM and simplify jsString (264099@main)
  • Changed to not use Vector as intermediate transfer buffer for typed array (263942@main)
  • Disabled Array#group and Array#groupToMap (263922@main)
  • Fixed definePropertyOnReceiver() to account for put_by_val_with_this bytecode op (263559@main)
  • Fixed /\p{Number}--]/v; to be a syntax error (264175@main)
  • Fixed JSON.parse to use simple recursion until it hits a soft-recursion threshold (263744@main)
  • Fixed StringConstructor constant function inlining in the case of [[Construct]] (264191@main)
  • Fixed Stringifier to quickly get names even if it involves accessors (263619@main)
  • Optimized Dictionary access (264040@main)
  • Optimized JSON.stringify integer serialization (263765@main)

Popover

  • Changed to not throw when popover or dialog is in requested state (263957@main)
  • Changed to only use the invoker to establish popover hierarchy (264002@main)
  • Changed to use the <dialog> focus algorithm for dialog popovers (263749@main)
  • Changed hidePopover to restore focus only when focus was in the popover (263645@main)
  • Reset the invoker in showPopover() (264006@main)

Web API

  • Added more explicit error messages for new URL(url, base) Constructor (264129@main)
  • Added value argument to URLSearchParams’s has() and delete() (263726@main)
  • Added support for AbortSignal.any() (264163@main)
  • Added support for ServiceWorkerRegistration.getNotifications() (264169@main)
  • Added support for the <search> element (264110@main)
  • Exposed DeviceMotionEvent and DeviceOrientationEvent on the global Window object on macOS (264271@main)
  • Changed document.body.onerror setter to setup a five-parameter listener (264190@main)
  • Changed the HTML parser to allow <hr> to be used inside <select> as a separator per a recent HTML Standard change the WebKit team contributed, which makes it easier to add a visual separator on macOS (263624@main)
  • Changed to not escape <, >, &, and nbsp inside a <noscript> element when scripting is enabled (263633@main)
  • Changed to respect Content-Type from internal headers instead of caching it in body (264054@main)
  • Changed to allow relative URLs and http(s) scheme in the WebSocket constructor (263968@main)
  • Changed WebSocket‘s binaryType setter to not throw (263963@main)
  • Fixed firing a controllerchange event on clients when a service worker gets deleted (264255@main)
  • Fixed running a service worker before firing its activate event (264242@main)
  • Fixed document.write of template producing multiple text nodes (263841@main)
  • Fixed event dispatching on disabled form controls (264098@main)
  • Fixed a bug in the preload scanner with nested templates (263850@main)
  • Fixed node depth computation for shadow nodes in ResizeObserver (263920@main)
  • Fixed revealing the focused input element in an event loop task instead of a post layout task (263665@main)
  • Fixed <input type="date"> with an invalid date to return an empty string for the value instead of the default value (263784@main)
  • Fixed sanitizing email input when the multiple attribute is set (263555@main)
  • Fixed selecting a link and pasting plain text changes text in the link, but not the link href (263539@main)
  • Fixed StorageManager.persist() (263930@main)
  • Fixed input.validity reporting valid: true for partially completed dates and times (263748@main)
  • Fixed Compression Streams not handling large outputs during the flush stage (263997@main)
  • Mapped align="abscenter" to vertical-align: middle (263852@main)

Media

  • Added support for getDisplayMedia video track clone resizing (263750@main)
  • Exposed aspectRatio and frameRate in RTCPeerConnection remote MediaStreamTrack settings (263849@main)
  • Fixed camera and microphone to all have groupIds (264112@main)

Accessibility

  • Fixed the HTML <menu> element to map to role=list (264077@main)
  • Fixed aria-describedby to be equivalent to aria-description and override it when both are present (263813@main)
  • Fixed slot elements not computing a label for aria-labelledby (263644@main)
  • Fixed slotted elements inside <dialog> and aria-modal not being accessible (263561@main)

SVG

  • Fixed <marker orient="-1"> to orient correctly (264053@main)
  • Fixed overflow="visible" having no effect on the dimension of a use element unless its dimensions are specified (263977@main)


This content originally appeared on WebKit and was authored by WebKit


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