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Apple has released Safari Technology Preview Release 94 for macOS 10.14 Mojave and macOS 10.15 Catalina



If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS.

This release covers WebKit revisions 250329-250947.

CSS Shadow Parts
Added support for the ::part() pseudo element from CSS Shadow Parts (r250889,r250902, r250914, r250628, r250584, r250643, r250701, r250817, r250821, r250861)

Web Animations
Fixed removing an element to only cancel its declarative animations (r250335)

Storage Access API
Changed document.hasStorageAccess() to return true when the cookie policy allows access and false otherwise, for third parties not blocked by ITP (r250431, r250589)

WebRTC
Changed to allow suspending RTCPeerConnection when not connected (r250726)
  Safari Technology Preview 94 released