---
title: Safari Technology Preview 159 Release Notes
framework: safari-technology-preview-release-notes
role: article
role_heading: Article
path: safari-technology-preview-release-notes/stp-release-159
---

# Safari Technology Preview 159 Release Notes

Preview the latest web technology updates including: WebAssembly, JavaScript, and Rendering.

## Overview

Overview Safari Technology Preview Release 159 is now available for download for macOS Monterey 12.3 or later and macOS Ventura. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS Monterey, or System Settings under General → Software Update on macOS Ventura. This release includes WebKit changes between: 256139@main…256265@main Note: Shared Tab Groups and syncing for Tab Groups, Website Settings, and Web Extensions are not enabled in this release. WebAssembly Fixed error message for local.get (256176@main) JavaScript Changed to allow variables with the same name as the class in its static block (256311@main) Rendering Fixed floating boxes overlapping their margin boxes (256183@main) Fixed rendering artifacts when presenting a fullscreen video (256251@main)

## See Also

### 2022

- [Safari Technology Preview 160 Release Notes](safari-technology-preview-release-notes/stp-release-160.md)
- [Safari Technology Preview 158 Release Notes](safari-technology-preview-release-notes/stp-release-158.md)
- [Safari Technology Preview 157 Release Notes](safari-technology-preview-release-notes/stp-release-157.md)
- [Safari Technology Preview 156 Release Notes](safari-technology-preview-release-notes/stp-release-156.md)
- [Safari Technology Preview 155 Release Notes](safari-technology-preview-release-notes/stp-release-155.md)
- [Safari Technology Preview 154 Release Notes](safari-technology-preview-release-notes/stp-release-154.md)
- [Safari Technology Preview 153 Release Notes](safari-technology-preview-release-notes/stp-release-153.md)
- [Safari Technology Preview 152 Release Notes](safari-technology-preview-release-notes/stp-release-152.md)
- [Safari Technology Preview 151 Release Notes](safari-technology-preview-release-notes/stp-release-151.md)
- [Safari Technology Preview 150 Release Notes](safari-technology-preview-release-notes/stp-release-150.md)
- [Safari Technology Preview 149 Release Notes](safari-technology-preview-release-notes/stp-release-149.md)
- [Safari Technology Preview 148 Release Notes](safari-technology-preview-release-notes/stp-release-148.md)
- [Safari Technology Preview 147 Release Notes](safari-technology-preview-release-notes/stp-release-147.md)
- [Safari Technology Preview 146 Release Notes](safari-technology-preview-release-notes/stp-release-146.md)
- [Safari Technology Preview 145 Release Notes](safari-technology-preview-release-notes/stp-release-145.md)