Safari Technology Preview

Safari Technology Preview for macOS Mojave

Web Inspector

• Merged the toolbar and tab bar to save vertical space
• Redesigned resource and action identifier icons
• Allowed the use of dark mode theme independently from the system-wide theme
• Annotated tabs so that they are properly recognized as such
• Changed to not re-cycle through items in the Styles or Computed details sidebar panel when pressing tab
• Fixed clicking a button navigation item to focus it, allowing for subsequent keyboard navigation
• Supported expanding and collapsing details sections with the spacebar or “enter” key
• Supported cycling through scope bar items by pressing tab

Web API

• Aligned garbage collection for XMLHttpRequest objects with the specification
• Aligned Fetch ‘request Origin header’ behavior with the specification
• Changed the case of an activating service worker getting terminated to go to an activated state
• Changed to load async scripts with a low priority
• Changed to accept a Document as an explicit root
• Implemented wildcard behavior for Cross-Origin-Expose-Headers

CSS

• Made the style invalidation accurate for user-action pseudo classes
• Changed to avoid full style resolution on Element::focus()

Page loading

• Changed fixed sized SVG content to be taken into account when computing visually not empty status
• Changed layers going from visually empty to non-empty to immediately trigger layer unfreezing

Back-Forward Cache

• Added quirk to disable to back-forward cache on docs.google.com

JavaScript

• Updated custom element caching to be aware of different worlds

Bug Fixes

• Fixed leaking DocumentTimeline and CSSTransition objects on CNN.com
• Fixed icloud.com notes text in titles and headings is distorted
• Fixed maps.google.com not loading properly with screen flickering when zooming