---
title: Safari Technology Preview 180 Release Notes
framework: safari-technology-preview-release-notes
role: article
role_heading: Article
path: safari-technology-preview-release-notes/stp-release-180
---

# Safari Technology Preview 180 Release Notes

Learn about the latest web technology updates in Safari Technology Preview: Accessibility, CSS, JavaScript, Loading, Media, Web Animations, and Web API.

## Overview

Overview Safari Technology Preview Release 180 is now available for download for macOS Sonoma and macOS Ventura. If you already have Safari Technology Preview installed, you can update it in System Settings under General → Software Update. This release includes WebKit changes between: 267603@main…268059@main. Accessibility Resolved Issues Fixed parsing the ARIA role attribute to ignore leading and trailing whitespace, including line breaks. (267930@main) Fixed exposing column headers of cells within role="row" elements with display: contents to assistive technologies. (267838@main) Fixed empty accessibility label for role="treeitem" elements with display: contents who have child text starting with a newline. (267839@main) Fixed form landmarks being incorrectly exposed when they are missing a label. (268025@main) CSS New Features Added support for rect() shape for shape-outside, clip-path, and offset-path. (267863@main) Resolved Issues Fixed the default link color contrast for the dark color scheme. (267847@main) Fixed :has(:scope) matching. (267856@main) Fixed invalidating scope-breaking :has(:is(...)) selectors. (268038@main) Fixed backface-visibility to create a stacking context and containing block. (267980@main) Fixed basic shapes to use an offset motion path. (267866@main) Fixed grid to not always put first and last baseline aligned items into different alignment contexts. (267922@main) Fixed :has(~ :is(.x ~ .y)) to consider all siblings of the :has scope when invalidating. (267932@main) Fixed invalidating :default pseudo-class changes on input elements. (267848@main) Fixed calc(clamp(1px, 1em, 1vh)) to collapse to clamp(1px, 1em, 1vh). (267840@main) Fixed determing baseline for grid by considering the first and last baseline-aligned grid items. (268029@main) Fixed the serialization of the computed style of grid-area. (268026@main) Deprecations Removed support for the auto value from alignment-baseline. (268008@main) JavaScript New Features Added support for CanDeclareGlobalFunction abstract operation and related implementations. (267655@main) Added support for HasVarDeclaration abstract operation. (267891@main) Loading Resolved Issues Fixed an issue with a workaround to handle cases where websites serve Data URLs with malformed padding. This issue prevented some images in Word documents from failing to display when hosted by Box and Sharepoint. (267987@main) Media Resolved Issues Fixed WebCodecs hardware encoders losing a frame. (267865@main) Web Animations Resolved Issues Fixed color-scheme to support discrete animation. (267750@main) Web API Resolved Issues Fixed URL encoding for Request’s referrer feature and Response.redirect(). They now always use UTF-8. (267841@main)

## See Also

### 2023

- [Safari Technology Preview 185 Release Notes](safari-technology-preview-release-notes/stp-release-185.md)
- [Safari Technology Preview 184 Release Notes](safari-technology-preview-release-notes/stp-release-184.md)
- [Safari Technology Preview 183 Release Notes](safari-technology-preview-release-notes/stp-release-183.md)
- [Safari Technology Preview 182 Release Notes](safari-technology-preview-release-notes/stp-release-182.md)
- [Safari Technology Preview 181 Release Notes](safari-technology-preview-release-notes/stp-release-181.md)
- [Safari Technology Preview 179 Release Notes](safari-technology-preview-release-notes/stp-release-179.md)
- [Safari Technology Preview 178 Release Notes](safari-technology-preview-release-notes/stp-release-178.md)
- [Safari Technology Preview 177 Release Notes](safari-technology-preview-release-notes/stp-release-177.md)
- [Safari Technology Preview 176 Release Notes](safari-technology-preview-release-notes/stp-release-176.md)
- [Safari Technology Preview 175 Release Notes](safari-technology-preview-release-notes/stp-release-175.md)
- [Safari Technology Preview 174 Release Notes](safari-technology-preview-release-notes/stp-release-174.md)
- [Safari Technology Preview 173 Release Notes](safari-technology-preview-release-notes/stp-release-173.md)
- [Safari Technology Preview 172 Release Notes](safari-technology-preview-release-notes/stp-release-172.md)
- [Safari Technology Preview 171 Release Notes](safari-technology-preview-release-notes/stp-release-171.md)
- [Safari Technology Preview 170 Release Notes](safari-technology-preview-release-notes/stp-release-170.md)