Added invalidation support for :buffering and :stalled pseudo-classes ( Made :has() require valid selectors for all selectors in the selector list ( Queries Level 4.

Added dependency cycle handling that involves root style ( Added detection for complex custom property cycles involving multiple loops ( Added handling for computational dependencies in transform functions ( Changed rules in shadow trees to be ignored ( Updated CSS custom properties containing var() to update when the referenced property is animated ( Fixed failing to provide intialValue in registerProperty with non-universal syntax should throw ( Fixed “ | +” to match “yellow blue” ( Ensured transition-property values fill with a custom property when other transition CSS properties are used with a longer list of items ( pseudo-class.Enabled Masonry layout by default ( 25869 Added the initial support for align-tracks and justify-tracks ( Custom Properties.Disabled the Screenshots timeline when inspecting targets that can't support it ( Layout.Fixed the ITAL variation axis slider showing NaN values in the Fonts details sidebar panel ( Fixed “Inspect Element” not revealing the selected element in the DOM tree if the element was hidden behind the 'Show All Nodes' button ( Timelines Tab.Fixed Web Inspector not remembering which side of the window it was attached to ( Fixed undocked Web Inspector windows being placed in a different window set from the window they are inspecting when using Stage Manager ( Elements Tab.Safari Technology Preview Release Notes Release 163 Web Inspector

Japanese locale emulator context menu