Release Notes for Safari Technology Preview 218
Safari Technology Preview Release 218 is now available for download for macOS Sequoia and macOS Sonoma. 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: 293327@main…293898@main
CSS
New Features
- Added support for
crossorigin()
andreferrerpolicy()
modifiers on CSS image loads. (293647@main) (149166339)
Resolved Issues
- Fixed
@font-face font-family
descriptor to not allow a list of values. (293892@main) (142009630) - Fixed placeholder visibility to update on input type change. (293346@main) (148681639)
- Fixed an issue where float boxes, selections, and carets were incorrectly painted inside skipped subtrees.(293358@main) (148741142)
- Fixed incorrect
getBoundingClientRect()
inside skipped subtree on an out-of-flow positioned box. (293428@main) (148770252) - Fixed: Updated the CSS
random()
function implementation to match the latest spec changes. (293439@main) (148868731) - Fixed: Replace
match-element
withelement-shared
in the random() function to match the standard changes. (293474@main) (148920346) - Fixed making
<pre>
and other elements use logical margins in the User-Agent stylesheet. (293670@main) (149212392)
JavaScript
New Features
- Added more support for
Temporal
. (293864@main) (75685318)
Resolved Issues
-
Fixed iterator helpers incorrectly closing iterators on early errors. (293842@main) (148774612)
-
Fixed
Iterator.prototype.reduce
failing with anundefined
initial parameter. (293797@main) (149470140)
Lockdown Mode
New Features
- Added support for more web fonts in Lockdown Mode by replacing a fragile hard-coded allowlist with a safe parser that handles a broader range of fonts without compromising security. (293728@main) (149314760)
Rendering
Resolved Issues
- Fixed an issue to allow images in scroll containers to load when they are near the viewport rather than when they are intersecting the viewport. (293552@main) (118706766)
- Fixed incorrect
ruby
annotation positioning insideways-lr
. (293572@main) (148713073) - Fixed: Prevented hit testing content inside a skipped subtree. (293361@main) (148741508)
SVG
New Features
- Added support for
pointer-events="bounding-box"
for SVGgroup
containers. (293473@main) (148181592)
Web API
Resolved Issues
- Fixed an issue where pending utterances do not receive an error event when speech synthesis is cancelled.(293536@main) (148731039)
Web Extensions
New Features
- Added support for the request-method content blocker trigger field. (293746@main) (148474901)
Resolved Issues
- Fixed converting declarativeNetRequest rules so that higher numbers are treated as higher priority. (293546@main) (145570245) (FB16607998)
- Fixed an issue causing
wasm-unsafe-eval
to not get parsed as a valid CSP keyword. (293854@main) (147551225) - Fixed and issue that prevented loading a web accessible resource from a subframe at
about:blank
. (293839@main) (149494286)
Web Inspector
New Features
- Added support in the Debugger tab for stepping over an
await
statement as though it is synchronous code. (293628@main) (149133320)
WebRTC
New Features
- Added support for
RTCRtpScriptTransformer.generateKeyFrame
to take arid
parameter. (293633@main) (148592676)