Accessibility

Resolved Issues

• Fixed VoiceOver cursor positioning for elements focused via the drawFocusIfNeeded() canvas API. (312024@main) (146323788)
• Fixed an issue where interactive elements containing an <svg> named by a child <title> element did not expose an accessible name. (312953@main) (172559238)
• Fixed VoiceOver line-by-line reading skipping content in read-only documents. (312263@main) (174349841)

Animations

New Features

• Added the animation property to AnimationEvent and TransitionEvent interfaces. (312859@main) (176527591)

Resolved Issues

• Fixed CSS anchor-positioned elements not updating correctly when their anchors have their transform animated. (312752@main) (175896047)

CSS

New Features

• Added support for the normal and none values on the position-anchor CSS property. (312378@main) (172097721)
• Added support for transform-aware anchor positioning. (312317@main) (175401339)

Resolved Issues

• Fixed an issue where -webkit-text-fill-color incorrectly overrode text-decoration-color. (312789@main) (47010945)
• Fixed shape-outside computing incorrect text wrapping in RTL writing modes. (312516@main) (56890238)
• Fixed CSS zoom interacting incorrectly with font-weight, font-style, and font-variant on iPad. (312944@main) (152173269)
• Fixed FontFace.loaded to reject when a local() font source fails to load. (312933@main) (174631384)
• Fixed CSS trigonometric functions to correctly convert degrees to radians. (312860@main) (175575617)
• Fixed sibling-index() and sibling-count() inside calc() functions to be correctly simplified. (312026@main) (175590806)
• Fixed sibling-index() and sibling-count()to correctly return 0 when used in cross-tree ::part() styling. (312544@main) (175592607)
• Fixed the CSS resize handle not working on an element when the handle overlaps a child iframe. (312099@main) (175621855)
• Fixed flex container baseline alignment being incorrectly computed for scroll containers by clamping to the border edge. (312206@main) (175631095)
• Fixed an issue where inline-level boxes with calc() margins or padding lost the fixed component during intrinsic width computation. (312081@main) (175669222)
• Fixed floats with margin-start incorrectly overlapping adjacent floats. (312083@main) (175669464)
• Fixed aspect-ratio calculations for block-level elements with size constraints. (312084@main) (175669713)
• Fixed aspect-ratio calculations for flex items with percentage cross-size constraints. (312085@main) (175669774)
• Fixed an issue where block-size: stretch resolved incorrectly for absolutely positioned elements with orthogonal writing modes. (312086@main) (175669844)
• Fixed aspect-ratio calculations for flex items with definite cross-size values. (312108@main) (175690028)
• Fixed revert-layer computing incorrectly when there is a leading empty or space substitution value. (312721@main) (175729680)
• Fixed :has() invalidation incorrectly resetting sibling relation bits, causing style invalidation failures for first-in-sibling-chain elements. (312221@main) (175738008)
• Fixed an issue where absolutely positioned tables with content exceeding their declared CSS width were incorrectly positioned. (312197@main) (175755871)
• Fixed height calculations for absolutely positioned tables with percentage-sized children. (312204@main) (175762381)
• Fixed an issue where absolutely positioned tables with explicit percentage or fixed heights did not resolve correctly against their containing block. (312280@main) (175852400)
• Fixed absolutely positioned tables ignoring min-height and shrinking below their content height. (312313@main) (175883577)
• Fixed absolutely positioned tables ignoring max-height constraints. (312357@main) (175932457)
• Fixed an issue where a flex item with aspect-ratio and content-box padding computed the wrong height in a column flex container. (312441@main) (176033726)
• Fixed an issue where flex items with explicit min-height: min-content were incorrectly treated as scrollable, zeroing out their minimum size. (312517@main) (176173688)
• Fixed :has() invalidation performance when used inside nested :is() selectors. (312715@main) (176354723)
• Fixed sibling-count() & sibling-index() used in @keyframes to re-resolve when siblings change. (312895@main) (176531901)

Forms

Resolved Issues

• Fixed <datalist> suggestions appearing with a white background on white text in dark mode after typing. (312889@main) (168676757)
• Fixed the select picker appearing at an incorrect position when the <select> element is anchor positioned. (312811@main) (175454476)
• Fixed field-sizing: content clipping the placeholder on number inputs that have no value. (312936@main) (175883299)
• Fixed <option> and <optgroup> elements to match the :disabled pseudo-class when inside a disabled <select>. (312890@main) (176559708)

HTML

New Features

• Added support for tabindex, focus(), blur(), and autofocus on MathML elements per the HTML Standard. (312609@main) (176258900)

Resolved Issues

• Fixed history.pushState() and history.replaceState() URL rewriting to match the updated specification. (312738@main) (83203469)
• Fixed sequential focus navigation to skip elements that do not meet the specification’s focusability requirements. (312032@main) (103370883)
• Fixed innerText to no longer emit newlines for visibility: hidden block elements. (312010@main) (175569426)
• Fixed innerText to correctly emit blank lines around <p> elements regardless of their CSS display value. (312169@main) (175729427)
• Fixed the speculative preload scanner to no longer incorrectly preload scripts inside SVG elements. (312327@main) (175800116)
• Fixed innerText on tables to no longer emit spurious trailing newlines and to preserve row-exit newlines after empty rows. (312941@main) (176635985)

Images

Resolved Issues

• Fixed naturalWidth and naturalHeight returning incorrect values for SVG images without intrinsic dimensions. (312552@main) (141196049)
• Fixed an issue where HDR images would flicker and lose their HDR appearance when overlapping layers animate. (312702@main) (163382580)

JavaScript

Resolved Issues

• Fixed an issue where parse errors in workers were not reported to the parent. (312701@main) (175610725)
• Fixed a performance issue with module resolution by limiting cache population to star-resolution and indirect-resolution cases. (312416@main) (175826413)
• Fixed a performance issue with TypedArray.prototype.lastIndexOf by adding SIMD-accelerated reverse search for numeric types. (312383@main) (175904377)
• Fixed a performance issue where building a module namespace with many export * statements was significantly slower than necessary. (312370@main) (175949532)
• Fixed DataView constructor to match specification-defined argument validation order and error throwing behavior. (312483@main) (176110210)
• Fixed an issue where Array.prototype.concat could produce incorrect results when combining arrays with incompatible indexing types. (312560@main) (176219964)

MathML

New Features

• Added support for multiple-character operators in MathML. (312867@main) (170907545)

Resolved Issues

• Fixed padding and border rendering on <msqrt> and <mroot> elements and corrected token sizing for mathvariant. (312902@main) (173081436)
• Fixed absolute positioning of elements inside MathML by ensuring logical height is updated. (312905@main) (173088146)
• Fixed tabIndex values not being set correctly for MathML elements. (312681@main) (174734133)

Media

New Features

• Added support for synchronized video playback on displays using genlock on macOS. (311815@main, 312166@main) (175197574)

Resolved Issues

• Fixed video playback failing when the declared MIME type in a <source> element does not match the actual content type served by the server. (312399@main) (166181001)
• Fixed ImageCapture to correctly queue takePhoto() and applyConstraints() requests to avoid concurrent capture session reconfiguration. (312196@main) (174950018)
• Fixed ::cue() selectors to correctly match the WebVTT root object in addition to child nodes. (312292@main) (175550173)
• Fixed Media Source Extensions readyState not being updated immediately when playback stalls due to a gap in buffered data. (312694@main) (176330683)

Networking

Resolved Issues

• Fixed XMLHttpRequest incorrectly dropping the request body during redirects. (312092@main) (98459882)
• Fixed an issue where partitioned cookies could not be deleted via WKHTTPCookieStore. (312478@main) (174557252)

Rendering

New Features

• Added support for anchor-valid and anchor-visible as aliases of anchors-valid and anchors-visible in position-visibility. (312080@main) (174438361)
• Added support for the Dutch IJ digraph in text-transform: capitalize and ::first-letter, correctly titlecasing “ij” to “IJ” at word starts when the content language is Dutch. (312335@main) (175912959)

Resolved Issues

• Fixed an issue where a block formatting context with margin-start could overlap an adjacent float. (312082@main) (93187697)
• Fixed boxes in the top layer to use the initial containing block as their static-position rectangle. (312908@main) (155495104)
• Fixed an issue where form controls with height: 100% in auto-height containers incorrectly resolved to zero height. (312526@main) (161699543)
• Fixed text being incorrectly truncated in RTL containers when combined with text-overflow: ellipsis and an inline-block pseudo-element. (312799@main) (168875614)
• Fixed an issue where height: 100% was incorrectly calculated for replaced elements like images serving as grid items nested inside a flexbox. (312281@main) (169431440)
• Fixed an issue where if a document in an iframe uses @prefers-color-scheme, it does not follow the color-scheme set by grandparents of the iframe. (312212@main) (172229372)
• Fixed an issue where list markers rendered on the wrong line when list items started with empty inline elements. (312356@main) (172762578)
• Fixed an issue where a child element with filter: blur() ignored border-radius overflow clipping from its parent. (312531@main) (175519148)
• Fixed incorrect event type mappings where mousemove and mouseup event listener region types were reversed. (312142@main) (175651369)
• Fixed an issue where containers with block-in-inline content did not expand when max-height was removed. (312608@main) (175799547)
• Fixed always-on scrollbar thumbs not rendering on the root element of nested documents with display: flex. (312300@main) (175866046)
• Fixed scrollbar-gutter placement on the root element in RTL layouts. (312360@main) (175939512)
• Fixed an issue where numbered list item markers rendered with more spacing between the marker and list content than in other browsers. (312515@main) (176027025)
• Fixed an issue where block-level boxes nested within inline elements were not properly aligned when using align-content: center. (312514@main) (176173122)
• Fixed a regression where height: stretch on children of flex items incorrectly resolved to viewport height instead of behaving as auto when the flex container lacked an explicit height. (312916@main) (176288044)
• Fixed intrinsic sizing for non-replaced elements with percentage dimensions. (312828@main) (176493856)

SVG

Resolved Issues

• Fixed SMIL repeat(n) event conditions not triggering animations. (312346@main) (173599629)
• Fixed glyph-orientation-vertical: auto to use UTR#50 Vertical Orientation properties for correct character orientation in vertical text. (312008@main) (175064567)
• Fixed the SMIL clock value parser to accept hours greater than 99 and reject malformed seconds values. (312350@main) (175593583)
• Fixed stroke-dasharray interpolation to use least common multiple for list length matching and corrected composition behavior. (312055@main) (175598175)

Security

Resolved Issues

• Fixed Content-Security-Policy object-src with an empty or invalid source list to block empty <object> and <embed> elements consistently with object-src 'none'. (312899@main) (171298717)

Storage

Resolved Issues

• Fixed an issue where IndexedDB could incorrectly return a version 0 database after an abort during the initial onupgradeneeded event. (312535@main) (176195526)
• Fixed FileSystemHandle serialization and deserialization when no storage is available. (312616@main) (176267344)

Web API

New Features

• Added support for creating dedicated workers inside shared workers per the HTML Standard. (312503@main) (118945089)

Resolved Issues

• Fixed the parent window’s history.state being set to null when history.pushState is called from a child iframe. (312475@main) (50019069)
• Fixed clicking on a scrollbar of an overflow container blurring the current activeElement. (312924@main) (92367314)
• Fixed an issue where an Event object’s target property could lose its JavaScript wrapper due to premature garbage collection. (312017@main) (175439759)
• Fixed FileSystemDirectoryHandle.resolve() to return the correct path array for child entries. (312061@main) (175645387)
• Fixed PerformanceNavigationTiming.domInteractive and domContentLoadedEventEnd incorrectly returning 0 instead of the correct timestamps. (312500@main) (175739835)
• Fixed FileSystemDirectoryHandle.removeEntry() to correctly remove entries. (312193@main) (175745157)
• Fixed CryptoKey to correctly remain associated with its secure context. (312502@main) (176157712)
• Fixed: Improved cross-origin isolation enforcement for workers. (312518@main) (176175488)
• Fixed SharedArrayBuffer cloning and agent cluster ID assignment. (312800@main) (176465817)

Web Extensions

New Features

• Added support for propagating user gestures through sendMessage(), connect(), postMessage(), and executeScript() APIs, enabling extensions to perform gesture-requiring actions like media playback. (312463@main) (175797617)

Resolved Issues

• Fixed an issue where web extension service worker registration database files accumulated on each Safari launch, causing performance degradation. (312231@main) (175484888)

Web Inspector

Resolved Issues

• Fixed an issue where the input field for recording canvas frames in the Graphics tab was sometimes too small to type in and only allowed typing one character at a time. (312433@main) (157787230)
• Fixed Timeline recordings showing unrelated events incorrectly nested inside longer events. (312649@main) (176309164)

WebAssembly

Resolved Issues

• Fixed a regression where RegisterSet::normalizeWidths() lost vector-width information, causing v128 argument corruption in WebAssembly SIMD thunks. (312610@main) (176035764)

WebGL

Resolved Issues

• Fixed compressedTexImage not validating whether the compressed texture format extension has been enabled. (312180@main) (175652171)
• Fixed some texImage functions reporting errors with incorrect function names. (312156@main) (175652807)
• Fixed some WebGL context state properties not being correctly reset on context loss. (312605@main) (176190808)

WebGPU

Resolved Issues

• Fixed GPUDevice.onuncapturederror event handler attribute not working. (312043@main) (149577124)
• Fixed: Restored maxStorageBuffersInFragmentStage and related WebGPU limits. (312387@main) (160800947)