Release Notes for Safari Technology Preview 61

Safari Technology Preview Release 61 is now available for download for macOS High Sierra and the beta of macOS Mojave. If you already have Safari Technology Preview installed, you can update from the Mac App Store’s Updates tab on macOS High Sierra and in the Software Update pane of System Preferences on macOS Mojave. This release covers WebKit revisions 233256-233728.


  • Fixed -webkit-clip-path offset for clipPath references (r233287)
  • Turned CSS Animation Triggers off by default (r233265)
  • Updated clip-path box mapping to unified box (r233302)

Dark Mode

  • Made the focus ring color honor the system accent color (r233315)
  • Prevented inverting text color for selections when not in dark mode (r233532)


  • Enabled Link Preload by default in the Experimental Features menu (r233263)
  • Fixed cookie creation time exposed to Objective-C (r233308)
  • Fixed find in page to find low (German) quotes (r233345)
  • Fixed return values for DOMMatrix.invertSelf() when used on a non-invertible matrix (r233628)
  • Implemented support for Element.toggleAttribute (r233475)
  • Improved window.event compliance: Should not be set when target is in shadow tree (r233489)
  • Promoted the Secure Context API from an experimental feature to always on (r233264)
  • Updated the Element API to use qualifiedName to comply with standards (r233545)

Service Workers

  • Made fetch() use “same-origin” credentials by default (r233720)
  • Fixed fetching several times in a row (r233719)


  • Disabled autoplay when the element is suspended (r233485)
  • Fixed video flicker which sometimes happened when playing to AppleTV (r233435, r233535)
  • Changed to reject getUserMedia promise if capture fails (r233425)


  • Fixed delay and video lag caused by enabling and disabling a MediStreamTrack (r233604)

Web Assembly

  • Stopped using tracePoints in JavaScript/WASM entry (r233378)

Web Inspector

  • Fixed copy from Search results content view (r233334)
  • Fixed the “Open Link” context menu action (r233316)
  • Fixed the resource search field in dark mode (r233608)
  • Fixed the Debugger content view to properly update when the left sidebar is collapsed (r233686)
  • Enabled control-dragging to pan the 3D render in the Layers inspector (r233695)


  • Added a subrole for meter elements on macOS (r233607)
  • Fixed setValue on text controls to send out key events (r233525, r233580)