Web Inspector

• Elements
  • RTL content inside elements is reversed and unreadable (r271458)
  • Font details sidebar panel
    • Improved line wrapping of table row titles (r271528)
    • Updated fractional variation axis ranges and default values to not be rounded (r271620)
    • Changed the “Historical Figures” section name to “Alternate Glyphs” (r271612)
• Sources
  • Allowed breakpoint actions to be evaluated as a user gesture (r271373)
• Console
  • Fixed bidi confusion when evaluation result has RTL text (r271726)

Scrolling

• Changed slow-scrolling reasons to not propagate across frame boundaries (r271508)
• Fixed scroll-chaining to trigger before the complete end of overscroll (r271730)
• Fixed scroll-padding to affect paging operations (r271788)
• Fixed scroll-snap points to be triggered during programmatic scroll (r271439)

CSS

• Added relayout for grid items when definiteness changes (r271745)
• Fixed incorrect scroll-snap-align parsing (r271480)
• Handled shapeMargin becoming NaN (r271738)
• Implemented logical border-radius (r271447)
• Included aspect-ratio in percentage resolution (r271375)
• Supported transferred min/max block size for aspect-ratio (r271554, r271648)
• Optimized :hover and :active style invalidation for deep trees and descendant selectors (r271584)
• Updated font when resolving letter-spacing: calc(...) values (r271688)
• Reversed transform animation not applied alongside other transform animations (r271524)

JavaScript

• Fixed super accesses on arrow functions defined as a class field (r271420)

Web API

• Accelerated HTMLInputElement creation (r271672)
• Changed to use the event loop to set the page title (r271514)
• Changed a non-integer tabindex to match the element behavior as if the tabindex was omitted (r271523)
• Disabled the context menu item and menu bar item to toggle automatic spelling correction where autocorrect="off" (r271459)
• Fixed elements in a table getting incorrectly selected in JavaScript (r271635)
• Included an origin identifier when writing promised image data to the drag pasteboard (r271685)

Media

• A video element needs to ignore the request to enter/exit fullscreen before the current fullscreen mode change is completed (r271377)
• Allowed MediaStream and non MediaStream backed videos to play together (r271698)
• Changed to prevent two pages in the same process to not play media stream backed video elements at the same time (r271670)
• Fixed videos not playing on Facebook Stories (r271725)
• Fixed picture-in-picture video subtitles that stop updating when Safari is backgrounded (r271737)
• Fixed playback failure on marketwatch.com (r271531)
• Fixed Netflix controls to correctly fade out after entering fullscreen (r271656)
• Fixed Facebook pausing video in picture-in-picture during scroll (r271470)
• Introduced a MediaSessionGroupIdentifier (r271643)
• Updated buttons of the media permission prompt (r271485)

WebRTC

• Enabled WebRTC VP9 profile 0 by default (r271641)
• Disabled verification timer in case of capture suspension (r271749)
• Changed to notify capture state immediately on page close (r271640)

Web Audio

• Addressed WebRTC live Opus audio stream stutters (r271575)

Accessibility

• Implemented aria-braillelabel and aria-brailleroledescription (r271416)
• Fixed AT-synthesized key events for common user actions such as increment or decrement (r271760, r271536)

Payment Request

• Changed to use the first item in shippingOptions even when it’s not selected (r271735)
• Fixed constructor to throw an error if the same payment method is provided more than once (r271734)
• Fixed issue where the shippingOption of the PaymentResponse is null after updateWith (r271703)

Speech Recognition

• Made SpeechRecognition permission error more informative (r271381)
• Updated media state for active speech recognition as it uses audio capture (r271636)

Private Click Measurement

• Enabled output logs by default, including to Web Inspector (r271473)

Bug fixes

• Fixed “Blocked Plug-in” instead of showing a PDF (r271650)
• Fixed combinations of nested perspective and transforms causing blurry layers on retina displays (r271388)
• Fixed SVG reference filter chain with errors applying only some of the filters and producing incorrect output (r271785)
• Removed explicit clamp to SRGB for Lab colors on CG platforms that support wide color (r271712)