Safari Technology Preview 107 Offers The Usual Bug Fixes and Performance Improvements

Apple on Thursday released Safari Technology Preview 107, the latest version of their developer preview web browser. The preview version of Apple’s popular browser offers developers and other interested users the ability to try out features that may or may not, debut in future public release versions of Safari.

The new Preview release includes bug fixes and performance improvements for CSS, JavaScript, Media, Web Animations, Accessibility, Rendering, Web API, and Web Inspector.

Release 107

Web Inspector

Network

Adjusted the spacing of the navigation items so that none are hidden when previewing a resource

Sources

Added showing the name of the Worker if it exists as the title of its main resource

Fixed source mapping issue when combining single-child directory chains

Fixed restoring global DOM, URL, or event breakpoints incorrectly enabling all breakpoints

Supported CSS pretty printing when a url() is nested inside a url()

Timelines

Fixed the memory stacked area graph to not extend beyond the “stopping time” marker

Storage

Fixed requesting the list of IndexedDB database names multiple times for the same security origin

Fixed double-clicking on a cookie field to start editing that cookie

Layers

Ensured that the text at the bottom of the details sidebar doesn’t overlap

Console

Added showing EventTarget listeners as an internal property

Added showing Worker name as an internal property

Miscellaneous

Accessibility

Fixed Left/Right arrow keys to collapse/expand details sections

Remote Inspection

Provided a way to turn on or off ITP debug mode and AdClickAttribution debug mode

Dropped support for iOS 8.x, iOS 9.x, and iOS 10.x

Web API

Changed the initial value of transform-box to be view-box to fix some SVG animations

Fixed computing the correct perspective matrix on a box with borders and overflow: hidden

Fixed incorrect location.origin in blob workers

Fixed Object.prototype.toString to match standards

XML external entity resources should only be loaded from XML MIME types

CSS

Changed the cursor to update during the rendering steps, rather than on a 20ms timer

Fixed the computed min-width and min-height for auto depending on the box

Fixed ::selection styling for a flex container

Fixed disappearing content with CSS parallax on an overflow scroll

Rendering

Fixed repaint issues when the login field collapses on music.apple.com

Fixed text clipped when rendered with fonts which have a negative line gap metric

Fixed table sizing when max-width is used

Scrolling

Fixed tapping on the trackpad in a <select> to flash the scrollers

Fixed a <select> that sometimes becomes non-scrollable

Fixed overflow scrollbars not growing when hovered

Fixed find not always scrolling search results into view

Fixed composited scrolling interfering with the propagation of perspective

Fixed scrollbars flickering in RTL scrollable regions

Media

Changed to ignore a poster set after playback begins

Fixed media controls tracks menu showing “Auto” selected instead of the track selected via the JavaScript API

IndexedDB

Improved the accuracy of IndexedDB estimated write size computation

Fixed a bug that could cause IndexedDB log files to grow without bound

JavaScript

Implemented Intl.Locale

Implemented BigInt.asIntN and BigInt.asUintN

Enabled logical assignment operators

Ensured IntlCollator.prototype.resolvedOptions returns relevant locale extension keys in alphabetical order

Web Animations

Fixed the animation engine to not wake up every tick for steps() timing functions

Fixed animations with a single keyframe not getting accelerated

Fixed calling reverse() on an accelerated animation having no effect

Coordinated “update animations and send events” procedure across multiple timelines

Fixed Document.getAnimations() to only consider document connection and not timeline association

Fixed the animation of font-size using rem values

Async Clipboard API

Enabled clipboard API access when pasting from a menu item or key binding

DataTransfer.files contains multiple files when pasting a single image with multiple representations

Fixed cut and paste from Google Doc to Notes in several (non-Latin) languages

Preserved character set information when writing to the pasteboard when copying rich text

Accessibility

Implemented accessibility of HTML 5.1 Drag & Drop

CSS Grid

Cleared the override width for computing percent margins

Changed to not create renderers for whitespace nodes

Changed to treat percentages as auto for the minimum contribution

Fixed auto repeat with multiple tracks and gutters

Bug Fixes

Added quirk for cookie blocking latch mode aolmail.com redirecting to aol.com under aol.com

Changed to enforce a URL cannot have a username, password, or port if its host is null

Changed XML external entities to require an XML MIME type to be loaded

Fixed the playhead in Touch Bar continuing when loading stalls

Fixed the search field on mayoclinic.org clipping the submit button

Fixed setting a host on a URL when no port is specified

Limited the HTTP referer to 4KB

The update can be downloaded from the Safari Technology Preview website, or if the browser is already installed, it can be updated via the “Update” tab in the Mac App Store. Full release notes for the update are also available on the Safari Technology Preview website.

While the preview is intended for use by developers and advanced users, in order to provide Apple with feedback on the development of the Safari browser, it can be run side-by-side with the release version of Safari. The app doesn’t require a developer account to download and install. For more information, visit the Safari Technology Preview website.