Safari Technology Preview 33 for Mac Release Offers Netflix AirPods Bug Fix

Performance

• Fixed an issue that could lead to large memory use in the Safari Technology Preview and web content processes when certain Safari Extensions are installed

JavaScript

• Fixed for-in optimization static analysis in the bytecode generator
• Improved performance of String.prototype.concat
• Improved the bytecode and type information provided for toLength
• Optimized Map and Set constructors

WebRTC

• Added WebRTC stats logging

Media Streams and Capture

• Fixed getUserMedia prompting too often
• Prevented getUserMedia requests from background tabs unless the tab is already capturing
• Prevented getUserMedia from prompting again if the user denied access

Media

• Enabled clients to specify a list of codecs that should require hardware decode support
• Exempted exclusively wall-powered devices from client-required hardware codec support
• Aligned Web Audio implementation to specifications when clients pass a value of 0 for bufferSize to the createScriptProcessor() method

CSS Grid

• Added support for orthogonally positioned grid items
• Fixed the behavior of positioned items without specific dimensions
• Fixed the logical margin applied in the tracks sizing algorithm of auto tracks
• Fixed margin applied when stretching an orthogonal item in a fixed size track

Web API

• Aligned <col span> and <colgroup span> limits with the latest HTML specification
• Fixed null content-type and content-length when fetching Blob URLs with XHR
• Fixed getComputedStyle() to return pixel values for left, right, top, and bottom, matching the specifications
• Implemented fromFloat32Array, fromFloat64Array, toFloat32Array, and toFloat64Array forDOMMatrix
• Implemented DOMPointReadOnly.matrixTransform()
• Enabled script modules to be imported via data URLs
• Updated to slightly stricter rules for custom element names from the recent draft standards
• Used the parent box style to adjust RenderStyle for alignment
• Added conditional support for media preloading and aligned media as values
• Aligned preload implementation to specifications with mandatory as value and other alignments

Rendering

• Changed behavior to remove backing store for layers that are outside the viewport
• Fixed an issue where a frame’s composited content is visible when the frame has visibility:hidden
• Changed behavior to destroy the associated renderer subtree when display:contents node is deleted

Web Inspector

• Added contextual menu item to log a WebSocket object to the console
• Added Debug view to the Settings tab for debug settings and experimental features
• Added the ability for the user to choose stylesheet when creating new rules
• Changed the Node Details Sidebar to allow editable key and values in the Attributes table
• Prevented unnecessary layout triggered when a Sidebar is resized while collapsed
• Fixed performing search on reload for an existing query in the Search tab
• Fixed images dragged from Web Inspector to Desktop being named “Unknown.png”
• Fixed an issue where reloading the page after switching from the Resource tab switches back
• Fixed the CodeMirror instance in the ConsolePrompt getting refreshed each time it is shown
• Fixed showing active Web Sockets when opening Web Inspector
• Fixed an issue preventing the go-to arrow to inspect Web Sockets that receive >50 messages per second
• Improved the reliability of automatically pausing in auto-attach when inspecting a JSContext

Bug Fixes

• Enabled AirPods to work with Netflix
• Fixed stuttering audio in YouTube when the page changes visibility