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Release notes for safari technology preview 12
Release notes for safari technology preview 12














  • Made pointer-events checks for SVG take in account inert subtrees (r290306).
  • Made input element UA shadow tree creation lazy (r290284).
  • #RELEASE NOTES FOR SAFARI TECHNOLOGY PREVIEW 12 UPDATE#

  • Fixed nd() to synchronously update bufferedAmount (r290995).
  • Fixed load event never firing after a form is submitted (r290841).
  • Fixed buffered flag not working in Paint Timing (r290247).
  • Fixed PerformanceNavigationTiming Response Start being unavailable when using Service Worker Cache (r291441).
  • Fixed CORS preflight failing due to cache-control header (r290507).
  • Fixed rendering when loading a USDZ as the main resource (r290562).
  • Fixed mousemove events double-firing in Safari (r290743).
  • Enabled the Permissions API by default (r291116, r290301).
  • Enabled the inert attribute by default (r290587).
  • Fixed WebGL rendering incorrect results when using preserveDrawingBuffer (r291218).
  • Improved virtual authenticator support ( r291423, r291321).
  • Enabled using WebAuthn within cross-origin iframe elements (r291018).
  • release notes for safari technology preview 12

    Added fallback to attestation=none if requested but unavailable for platform authenticator (r290539).Added support for authenticatorSelection.residentKey (r291176).Fixed element with position: sticky after sticking, starting to move incorrectly when scrolling (r290812).Fixed scroll animation when scroll snap scroller is navigated with the keyboard (r290548, r290625).Fixed incorrect painting when scrolling a page with fixed backgrounds (r290785).Allowed history swipe in scroller with overscroll-behavior (r291497).Fixed clamping animated values to the 0-1 range for:.Added support for discrete animation to:.Made changes to font-size recompute keyframes (r290730).Fixed text-emphasis-color to support non-discrete animations (r290887).Fixed text-emphasis shorthand to be animatable (r290895).Fixed outline-width with transition to animate correctly (r290735).Fixed animations on modal dialog elements and ::backdrop to run more than once (r291282).Fixed ::placeholder to not be a valid pseudo-element for a keyframe effect target (r290662).Fixed animating fill and stroke to or from currentColor (r290898).Fixed keyframe values set to inherit to recompute their values when the inherited value changes (r290823).Fixed inherit values should trigger keyframe recomputation if any previous effect has changed that property (r290831).Changed setting the composite property on a keyframe effect to invalidate the target style (r290741).Added support for passing an optional timeline to Element.animate() (r290655).Handled perpendicular containing blocks when computing available logical height (r290634).Fixed scrollbars disappearing when very long or wide (r290545).Fixed table sizing when colgroup comes after tbody (r290512).Fixed alt text position in right-to-left context (r290726).Fixed image alt text bi-directional reordering (r290734).Fixed Temporal.PlainDate to validate input range (r290282).

    release notes for safari technology preview 12

    Added CalendarDateTime parsing (r290248).Fixed background-clip: text to work with display: flex (r291303).Implemented logical properties for CSS overscroll-behavior (r290422).Implemented text-decoration as a shorthand (r290756, r291244).Fixed positioning of position: absolute items within nested grids (r290674).Fixed subgrid items to always be stretched (r291464).Handled reverse flow direction when converting iterator coords for a subgrid (r290572).Converted grid direction to be relative to subgrid when accounting for extra margin (r290576).Fixed computing the correct containing block override size for items that are subgridded in one dimension only (r290577).Let revert-layer in the lowest layer roll back to user styles (r290864).Fixed revert on low-priority properties (r291260).Added support for revert-layer in (r290729).Implemented new container selection algorithm (r291098).Fixed offsetWidth, offsetHeight, and similar to update layout for container queries (r290380).Fixed getComputedStyle to update the style for invalid query containers (r290320).Ensured container style changes are propagated to descendants (r291500).Changed to only apply inline-size containment when it is allowed (r291154).Added basic support for container units (r291474).Added support for nested container queries (r290257).Service workers are no longer terminated while they are being inspected.

    release notes for safari technology preview 12

    Added option in the Layout panel of the Details Sidebar for Flexbox overlays to show each item's CSS order and/or DOM index in the parent flex container (r290613) Note: Tab Groups do not sync in this release.

    release notes for safari technology preview 12

    Safari Technology Preview offers a sneak peek at upcoming web technologies in macOS and iOS and lets you and experiment with these technologies in your websites and extensions. Apple has released Safari Technology Preview 143 for macOS Monterey and macOS Big Sur.














    Release notes for safari technology preview 12