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Release Notes for Safari Technology Preview 215
Mar 17, 2025
by Jon Davis
Safari Technology Preview Release 215 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: 290457@main…291467@main.
CSS
New Features
Added support for Scroll Driven Animations. (290471@main) (144887859)
Added support for text-wrap-style: pretty. (291092@main) (145577976)
Added support for CSS Anchor Positioning. (291214@main) (145681750)
JavaScript
Resolved Issues
Fixed processing of an alternation of strings (290982@main) (145222010)
Networking
Resolved Issues
Fixed using WebSocket in a WebWorker causing the entire Worker to freeze. (290802@main) (145149784)
Scrolling
Resolved Issues
Fixed autoscrolling for smooth scrolling while selecting text. (290497@main) (144900491)
Text
Resolved Issues
Fixed generating scroll to text fragments around text that contains newlines. (290761@main) (137109344)
Fixed generating text fragments when the selected text starts and ends in different blocks. (290748@main) (137761701)
Fixed Copy Link to Highlight not working when selecting text that is its own block and when that text exists higher up in the document. (290683@main) (144392379)
Fixed selections that start or end in white space not creating text fragments. (291146@main) (145614181)
Web API
New Features
Added support for Trusted Types. (291409@main) (130065736)
Added support for the File System WritableStream API. (291399@main) (145875384)
Resolved Issues
Fixed fullscreen to use a single queue for event dispatching. (290898@main) (145372389)
Web Extensions
Resolved Issues
Fixed a bug where the runtime.MessageSender origin parameter would be lowercased, differing from the result returned from runtime.getURL. (291118@main) (140291738)
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