---
title: Safari 17.2 Release Notes
framework: safari-release-notes
role: article
role_heading: Article
path: safari-release-notes/safari-17_2-release-notes
---

# Safari 17.2 Release Notes

Released December 11, 2023 — Version 17.2 (19617.1.17)

## Overview

Overview Safari 17.2 is available for iOS 17.2, iPadOS 17.2, macOS Sonoma, macOS Monterey, and macOS Ventura. Accessibility Resolved Issues Fixed parsing the ARIA role attribute to ignore leading and trailing whitespace, including line breaks.  (113923520) Fixed form landmarks being incorrectly exposed when they are missing a label.  (115462091) Fixed non-group and non-tree-item children of role="treeitem" elements becoming stale after dynamic changes.  (115936550) Fixed Play Animation and Pause Animation animated image context menu items sometimes not appearing after setting toggle.  (117215059) Fixed VoiceOver not announcing button labels if the button is in a shadow root.  (118118138) Apple Pay Deprecations Deprecated enabled in favor of available in shippingContactEditingMode.  (113159800) AutoFill Resolved Issues Fixed clipping the “Strong Password” button after selecting “Suggest New Password”.  (113701243) CSS New Features Added support for the CSS Custom Highlight API.  (68662936) Added support for mask-border properties.  (82991599) Added support for the counter-set property and support for the list-item value with the counter-set, counter-reset, and counter-increment properties.  (88663348) Added support for linear(...) timing function for CSS animations & transitions.  (93088094) Added support for the cap unit.  (97025854) Added support for the <position> parameter in ray().  (110821024) Added the support for mixed percentage and length/number arguments in CSS round(), mod(), and rem() functions.  (113234898) Added new relaxed parsing behavior for CSS Nesting.  (113475843) Added support for xywh() shape for shape-outside, clip-path and offset-path.  (113643020) Added support for offset-position: normal for CSS Motion Path.  (113644765) Added support for the rcap, rex, ric, and rch units.  (114367871) Added support for rect() shape for shape-outside, clip-path and offset-path.  (114479534) Added new typed OM factory functions for font and root font relative units.  (114482930) Added support for the coord-box parameter in ray().  (114577300) Added support for border-radius when using  <coord-box>  in Motion Path syntax.  (114883507) Added offset-position support for circle() and ellipse().  (114951375) Resolved Issues Fixed the font-family descriptor for @font-palette-values to accept multiple values.  (105975619) Fixed :has(:scope) matching.  (106524140) Fixed container selection for container units in pseudo-elements.  (106739553) Fixed container query with font units to invalidate when the font changes.  (106739736) Fixed :nth-child() invalidation when not in subject position.  (106740353) Fixed :has(:host) invalidation.  (106768205) Fixed :has(:nth-child()) invalidation and related.  (106768224) Fixed invalidating scope-breaking :has(:is(...)) selectors.  (106768250) Fixed handling dynamic updates to viewport units when used in @property initial value.  (108287215) Fixed baseline aligned flex items to also be aligned using their fallback alignment.  (109496710) Fixed: Changed to allow an empty font-family name in @font-face and @font-palette-values.  (109613703) Fixed the <basic-shape> implementation for offset-path.  (110565070) Fixed :user-invalid and :user-valid interactions with form reset and submission.  (110677832) Fixed <coord-box> implementation for offset-path.  (110938788) Fixed <position> to never serialize to a single value.  (111750372) Fixed NaN numeric representation to be 0 not Infinity.  (111984451) Fixed serializing CSS math function root nodes.  (111984509) Fixed min() and max() with one argument to always collapse to calc().  (111986569) Fixed animation using padding-block or padding-inline not overriding the set padding style.  (112023856) Fixed color-mix() to respect :visited style to resolve “currentcolor”.  (112419198) Fixed serialization to always serialize implicit & and an implicit nested rule.  (112900363) Fixed <hr> width attribute set to 0 or 0px to correctly compute to 0px.  (113087533) Fixed mod() evaluation.  (113213059) Fixed round() evaluation when the number is a multiple of the step.  (113233588) Fixed computation of the from-font value for font-size-adjust.  (113328110) Fixed the serialization of percentages in color-mix().  (113399146) Fixed border-image to fall back to the border property if the image is invalid.  (113646392) Fixed <family-name> to forbid generic families.  (113746537) Fixed the check for in-progress layout when setting a containing block rect for ray() used with motion-path.  (113780201) Fixed animating a rotate property when the scale property is also used.  (113999490) Fixed <resolution> to not accept negative resolutions for @property.  (114235642) Fixed currentcolor to correctly inherit computed :visited style.  (114254856) Fixed nested subgrids from contributing to the calculation of the enclosing track size.  (114271839) Fixed container-name to use scoped names.  (114284428) Fixed container unit resolution to check if the selected container is eligible.  (114291153) Fixed the scripting media query to never match initial-only.  (114340361) Fixed form submission to also affect :user-invalid and :user-valid state.  (114580382) Fixed the container for the ::part pseudo-element to be selected from the originating element tree.  (114626579) Fixed serialization of infinity and -infinity in colors.  (114808320) Fixed lab, lch, oklab, oklch components to be clamped to appropriate ranges.  (114808444) Fixed color-mix() to not serialize to legacy color syntax.  (114949008) Fixed resolving the size of a replaced element by using its intrinsic size as the width.  (115007278) Fixed basic shapes to use an offset motion path.  (115068196) Fixed grid to not always put first and last baseline aligned items into different alignment contexts.  (115083708) Fixed determining non-orthogonal grid item’s columnAxisPosition by considering fallback alignment for first/last baseline.  (115136343) Fixed :has(~ :is(.x ~ .y)) to consider all siblings of the :has scope when invalidating.  (115205991) Fixed invalidating :default pseudo-class changes on input elements.  (115236525) Fixed calc(clamp(1px, 1em, 1vh)) to collapse to clamp(1px, 1em, 1vh).  (115240159) Fixed offset path inset shapes with a border-radius.  (115316728) Fixed determing baseline for grid by considering the first and last baseline-aligned grid items.  (115441833) Fixed the serialization of the computed style of grid-area.  (115521493) Fixed not serializing at <position> in circle() or ellipse() if unspecified.  (115866108) Fixed serialization of shape-outside.  (115938310) Fixed serialization issues with clip-path and offset-path.  (115953688) Fixed getComputedStyle() to return a resolved value for font-size-adjust: from-font.  (116151111) Fixed non-orthogonal subgrid margin, border, and padding to be considered for self-align baseline items in the same alignment context.  (116206243) Fixed subgrids to have their row-start margins resolved after column sizing in the outer grid.  (116369419) Fixed accumulating the sum of non-orthogonal nested subgrids margin, border, and padding for first baseline alignment in the column axis.  (116443747) Fixed CSS grid support for last baseline alignment in the column axis for subgrid items with non-orthogonal ancestors.  (116484865) Fixed validating @property at parse-time.  (116803886) Fixed computing the definite free space of grid rows when the grid has an aspect-ratio and definite logical width.  (117138268) Fixed the continuity of transform animations through singular transforms.  (117209302) Fixed @supports selector(:popover-open) to reflect disabled state.  (117226626) Fixed CSS grid to synthesize the central baseline of grid items in the column axis.  (117424263) Fixed serialization for CSS highlight pseudo-elements.  (117864974) DOM Resolved Issues Fixed handling tasks scheduled for web pages in the back-forward cache.  (116349535) Deprecations Removed the non-standard incremental attribute and search event.  (48937114) Fonts Resolved Issues Fixed COLRv0 font rendering.  (115721319) HTML New Features Added support for the name attribute in the <details> element.  (114677170) Added support for one-time-code as an allowed autocomplete field name.  (115684196) Resolved Issues Fixed <input type="number"> not returning the correct value when a decimal is entered.  (107187010) Fixed alert sounds in web apps being replayed when the system play/pause key is pressed. Playing short-duration <audio> sources no longer registers the page as the system’s Now Playing application.  (114667001) Fixed dynamic handling of <base> elements.  (114756660) Fixed URL encoding of <base> elements.  (114861187) Fixed URL encoding of SVG <image> elements.  (114873373) Fixed empty value attributes to not be ignored on image input types.  (114887143) Fixed [dir=auto] invalidation with password fields.  (115887776) HTTP Resolved Issues Fixed COOP header breaking back and forward behavior when client-side redirects are involved.  (104659192) JavaScript New Features Added support for Intl.NumberFormat’s FormatApproximately operation.  (113461245) Added support for import attributes.  (113940597) Resolved Issues Fixed an edge case in the semantics of for loops.  (44730906) Fixed: Optimized Array#splice to skip result array creation if it is not used at all.  (113367762) Fixed: Updated Intl.DateTimeFormat’s to obtain options only once, matching spec changes.  (113789192) Fixed: Increased minimumFractionDigits and maximumFractionDigits limit from 20 to 100.  (113869343) Fixed rounding to nearest in optimizing JITs.  (114208146) Fixed global and eval code to throw a TypeError if a function declaration attempts to shadow a non-configurable, non-writable global property.  (114215396) Fixed Intl.NumberFormat and Intl.PluralRules roundingIncrement to match specification changes.  (114219889) Loading Resolved Issues Fixed navigation to about scheme URLs without opaque paths.  (116238322) Media New Features Added unprefixed support for preservesPitch.  (66579074) Implemented automatic text track selection for 'metadata' tracks.  (113004825) Added support for H264 L1T2 for WebCodecs.  (114940765) Resolved Issues Fixed an issue where Safari would briefly change document.visibilityState to hidden when entering fullscreen.  (104984915) Fixed canplay event to fire for video elements where the first sample’s presentation time is slightly greater than 0.  (105169372) Fixed RTCRtpSender maxFramerate encoding parameter having no effect.  (112397603) Fixed handling NaN in audio delay curves.  (114881060) Fixed WebCodecs hardware encoders losing a frame.  (115252749) Fixed audio elements with event listeners not getting garbage collected.  (116346717) (FB13224538) Fixed the close algorithms for audio and video WebCodec decoders and encoders to match specification changes.  (116346725) Fixed picture-in-picture when the srcObject is a video stream.  (116465668) Fixed constraints on the maximum width or height causing blurry getDisplayMedia video.  (116810370) Fixed object-fit: fill to work for a video element using a canvas stream srcObject.  (116832514) Fixed the limit for the number of real-time audio threads.  (116864442) Networking Resolved Issues Fixed an issue causing embedded videos in iWork documents to fail.  (116493190) Privacy New Features Added support for blob partitioning.  (94442816) Rendering Resolved Issues Fixed the scrollbar not updating on CSS color-scheme change.  (99567600) Fixed ignoring calc() values on <colgroup> elements.  (106692191) Fixed out-of-flow boxes not showing.  (112733052) (FB12722063) Fixed out-of-flow <br> to not trigger a line break.  (113208050) Fixed ancestor subgrids’ gutters to add to the extra layer of margin for descendant subgrids.  (114271857) Fixed a bug where swapping to Safari from another app (or tab) would flash black.  (116530284) Safari Resolved Issues Fixed website notifications delivered through APNS to appear with the domain name and Safari icon, matching the appearance of website notifications delivered through Web Push.  (116612341) Safari Extensions Resolved Issues Fixed an issue where dynamic declarativeNetRequest rules would not override static rules.  (107044339) (FB12074742) Fixed behavior of domains, requestDomains, excludedDomains, and excludedRequestDomains declarativeNetRequest values to match subdomains by default.  (117592996) Scrolling Resolved Issues Fixed clicking and dragging the overlay scrollbar that overlaps a composited, positioned descendant of a container with overflow: scroll.  (89598421) Fixed scrolling on nested pointer-events: auto inside pointer-events: none.  (110954175) Fixed a bug that caused some complicated websites to freeze when scrolling.  (113318934) Service Workers Resolved Issues Fixed a cache miss bug in DOMCache that triggered service worker fetch errors.  (115740959) (FB13188943) SVG New Features Added the missing default value translate for animateTransform.  (113681862) Added support for SVG <image crossorigin>.  (114462749) Resolved Issues Fixed the motion path anchor point used for SVG when the transform-box is not the view-box.  (108285569) Fixed paint-order property to inherit.  (114030037) Fixed the SVG mask to work as a mask-resource for the CSS mask-image.  (114465545) Fixed repainting an SVG element with a CSS reference filter when the filter changes.  (117047658) Text Resolved Issues Fixed font fallback to ignore generic families for Private-Use Area Unicode codepoints.  (115901340) (FB13197885) Web Animations Resolved Issues Fixed color-scheme to support discrete animation.  (94615599) Web API New Features Added support for CanvasRenderingContext2D.reset().  (77842434) Enabled responsive images in <link rel=preload>.  (83891023) Added support for from-image to ImageBitmapOptions.  (104398244) Added support for Fetch Priority.  (106852027) Added support for sending mouse events to disabled form controls.  (110656783) Added support for the title attribute for pattern validation errors.  (111394402) Resolved Issues Fixed createPattern to return null for a zero height image.  (104285727) Fixed: Aligned <script type language> with the HTML Standard.  (109600797) Fixed  returning opaque origin for blob: URL containing inner non-http(s): URL.  (109781193) Fixed: Changed navigable target names to _blank if they have dangling markup.  (110134016) Fixed incorrect tab stop if the tab-size is a <length> and the distance to the next tab stop is less than 0.5ch.  (112043546) Fixed URL, pathname, and search setter incorrectly stripping trailing spaces.  (112433299) Fixed custom highlight text decoration to respect priority.  (112494779) Fixed handling focusability for plugin elements which have browsing context.  (112821601) Fixed: Converted embed hidden into a proper boolean attribute.  (113051256) Fixed edge cases in parsing options.  (113826514) Fixed <a> and <area> origin getters to return an empty string for non-parsable URLs.  (114078288) Fixed <a> and <area> protocol setters for non-parsable URLs.  (114371380) Fixed URL’s protocol setter to forbid change a special URL to a non-special URL.  (114624048) Fixed Worker and SharedWorker to fire an Event instead of an ErrorEvent for a parsing error.  (114694487) Fixed adoptedStyleSheets.length to be settable and improved ObservableArray alignment with the specification.  (114822538) Fixed a bug that could cause incorrect equality checks between DOM Document objects.  (114857465) Fixed checking for NaN when creating a DelayNode for WebAudio.  (115008784) Fixed element.querySelector(":has(:scope *)") to never match.  (115158183) Fixed mutation events for child nodes.  (115527098) Fixed mouse event handling such that if a drag operation is initiated from a canceled mousedown event, all subsequent mouse events are sent to the originating frame until the drag operation ends with a corresponding mouseup event.  (116668701) Fixed light dismiss for a popover element within a complex shadow DOM breaks light dismiss calculation.  (117214343) Web Apps New Features Added support for copying cookies when saving a website to the Home Screen on iOS and iPadOS.  (104438319) Users can now enable the status bar from the View menu on macOS.  (109663387) Users can now set the current page as the homepage for web apps on macOS.  (112819599) Resolved Issues Fixed many common issues such as an icon appearing blurry with jagged edges, lacking padding, or failing to load by improving how web app icons are loaded. If you supply multiple size variants for the preferred icon kind, all sizes are saved, allowing the most appropriate size to be displayed based on context. For example, the largest size variant is shown in Finder’s Gallery view and Quick Look, a medium sized variant is shown in the Dock and Launchpad, while a smaller sized variant is shown in Spotlight. To provide the best user experience, supply at least one opaque, full-bleed maskable square icon in the web app manifest, either as an SVG (any size) or high resolution bitmap (1024x1024). If the web app manifest doesn’t specify any high resolution full-bleed icon, Safari may fall back to the apple-touch-icon if it improves the user experience. If you specify an apple-touch-icon through link elements in the webpage, do not omit these link elements based on user agent detection. When you only supply a transparent icon with custom shape, Safari automatically adjusts spacing between your icon and the standard system background to avoid tangents.  (102449619) Fixed an issue where page zoom is reset to 100% after quit and relaunch.  (110298546) (FB12233006) Fixed a bug where theme-color is not applied to the title bar in web apps.  (112980819) Fixed an issue where sign in pages sometimes unexpectely open in Safari instead of the web app.  (113520837) Fixed an issue where clicking on notifications after 30 seconds from delivery fail to open the web app.  (113757950) Fixed an issue that repeatedly asks for camera access after relaunching a web app.  (114110664) Fixed remembering window size for a webpage added to the Dock.  (114534506) Fixed an issue where a blank window remains on screen after starting a download.  (115457207) Fixed an issue where some login pages unexpectedly open in Safari.  (115527738) (FB13171758) Fixed a bug where the scope member in the web app manifest is not respected.  (116261588) Fixed an issue where AutoFill settings in Safari do not take effect in web apps.  (117671220) Fixed an issue where option+clicking a link failed to start a download.  (117809013) Fixed an issue where JavaScript-based redirection to an external website causes a blank window to appear or the current window to disappear.  (117809066) Fixed an issue where web app usage is not reflected in Screen Time.  (117809075) Fixed an issue that prevents Ignore Screen Time Limits from working in web apps.  (117809075) Web Assembly Resolved Issues Fixed WebAssembly SIMD vectors that can get corrupted when using v128.any_true.  (111050621) Web Inspector New Features Added color palette with CSS variables in color picker.  (112099603) Added a specialized editor for the CSS steps() timing function.  (113345146) Resolved Issues Fixed: Moved the details sidebar to the bottom when Web Inspector is too narrow.  (63567675) (FB7711657) Fixed objects logged to the console with multiple private fields that use the same name.  (109215331) WebDriver Resolved Issues Fixed dispatched mouse events always having buttons property set to zero.  (116049187) WebGL New Features Added support for EXT_blend_func_extended.  (115158977) Enabled support for WEBGL_clip_cull_distance by default.  (115174172) Resolved Issues Fixed a bug where multi-level textures would lose levels in WebGL.  (116362216) WebRTC Resolved Issues Fixed long delays switching audio input in video conferencing applications.  (102724364) Fixed video quality when using TransformStream with Simulcast.  (110395571) Fixed WebRTC UDP traffic to use interfaces already used by TCP traffic.  (111000448) Fixed RTCDataChannel to use BinaryType to align with specifications.  (114559008)

## See Also

### Version 17

- [Safari 17.6 Release Notes](safari-release-notes/safari-17_6-release-notes.md)
- [Safari 17.5 Release Notes](safari-release-notes/safari-17_5-release-notes.md)
- [Safari 17.4 Release Notes](safari-release-notes/safari-17_4-release-notes.md)
- [Safari 17.3 Release Notes](safari-release-notes/safari-17_3-release-notes.md)
- [Safari 17.1 Release Notes](safari-release-notes/safari-17_1-release-notes.md)
- [Safari 17 Release Notes](safari-release-notes/safari-17-release-notes.md)