--- title: Safari Technology Preview 88 Release Notes framework: safari-technology-preview-release-notes role: article role_heading: Article path: safari-technology-preview-release-notes/stp-release-88 --- # Safari Technology Preview 88 Release Notes Preview the latest web technology updates including: JavaScript, WebRTC, Web API, Pointer Events, Rendering, Accessibility, WebGL, WebGPU, Web Inspector, and Bug Fixes. ## Overview Overview Safari Technology Preview Release 88 is now available for download for macOS Mojave and the macOS Catalina beta. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release covers WebKit revisions 247047-247433. JavaScript Enabled Intl.PluralRules and Intl.NumberFormatToParts by default (r247247) WebRTC Registered a MediaStreamTrack as media producer only if it is a capture track (r247208, r247382) Web API Fixed XHR CORS requests getting logged twice on the server (r247276) Pointer Events Updated to respect pointer capture when dispatching mouse boundary events and updating :hover (r247148) Rendering Changed to avoid extra backing store on elements with overflow: scroll and visibility: hidden (r247420) Changed to trigger a compositing update when a video element is changing (r247187) Accessibility Added accessibility announcement notifications to show, dismiss and selection change for the datalist suggestions view (r247418) Exposed HTML datalist accessibility (r247295) Enhanced support of aria-haspopup per ARIA 1.1 specification. (r247071) Implemented support for ARIA roles: insertion, deletion, subscript, superscript, and time (r247349) Fixed ignored role="presentation" on HTML elements for VoiceOver (r247330) WebGL Hooked up WebGL’s back buffer in ANGLE backend on macOS (r247315) WebGPU Added most of the remainder of the standard library (r247174) Implemented GPUError and error scopes (r247366) Made the destructor of VariableDeclaration non-virtual (r247124) Optimized the lexer (r247171) Removed the phase resolveCallsInFunctions (r247170) Web Inspector Added support for pasting copied DOM nodes in the Elements tab (r247054) Fixed dismissing a blank property to no longer cause the rule to appear in the Changes panel (r247406) Fixed an issue where unbalanced quotes or parenthesis weren’t displayed as properly closed after editing values (r247196) Updated descendant DOM breakpoints be enabled, disabled, or deleted from a collapsed parent (r247053) Bug Fixes Fixed paste from Notes into Excel 365 spreadsheet (r247222) Fixed video playback on xfinity.com/stream on macOS Catalina (r247213) ## See Also ### 2019 - [Safari Technology Preview 97 Release Notes](safari-technology-preview-release-notes/stp-release-97.md) - [Safari Technology Preview 96 Release Notes](safari-technology-preview-release-notes/stp-release-96.md) - [Safari Technology Preview 95 Release Notes](safari-technology-preview-release-notes/stp-release-95.md) - [Safari Technology Preview 94 Release Notes](safari-technology-preview-release-notes/stp-release-94.md) - [Safari Technology Preview 93 Release Notes](safari-technology-preview-release-notes/stp-release-93.md) - [Safari Technology Preview 92 Release Notes](safari-technology-preview-release-notes/stp-release-92.md) - [Safari Technology Preview 91 Release Notes](safari-technology-preview-release-notes/stp-release-91.md) - [Safari Technology Preview 90 Release Notes](safari-technology-preview-release-notes/stp-release-90.md) - [Safari Technology Preview 89 Release Notes](safari-technology-preview-release-notes/stp-release-89.md) - [Safari Technology Preview 87 Release Notes](safari-technology-preview-release-notes/stp-release-87.md) - [Safari Technology Preview 86 Release Notes](safari-technology-preview-release-notes/stp-release-86.md) - [Safari Technology Preview 85 Release Notes](safari-technology-preview-release-notes/stp-release-85.md) - [Safari Technology Preview 84 Release Notes](safari-technology-preview-release-notes/stp-release-84.md) - [Safari Technology Preview 83 Release Notes](safari-technology-preview-release-notes/stp-release-83.md) - [Safari Technology Preview 82 Release Notes](safari-technology-preview-release-notes/stp-release-82.md)