--- title: Safari Technology Preview 177 Release Notes framework: safari-technology-preview-release-notes role: article role_heading: Article path: safari-technology-preview-release-notes/stp-release-177 --- # Safari Technology Preview 177 Release Notes Learn about the latest web technology updates in Safari Technology Preview: Web Inspector, CSS, Rendering, Popover, Media, JavaScript, Web API, Accessibility, and Apple Pay. ## Overview Overview Safari Technology Preview Release 177 is now available for download for macOS Sonoma beta 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: 266419@main…266623@main. Web Inspector Fixed broken search functionality (266783@main, 266820@main, 266802@main) CSS Fixed mod() evaluation (266485@main) Fixed round() evaluation when the number is a multiple of the step (266504@main) Fixed computing the correct overflow-x and overflow-y values for elements (266560@main) Rendering Fixed out-of-flow
to not trigger a line break (266475@main) Popover Fixed popover incorrectly auto-hiding when using shadow DOM (266457@main) Media Fixed fullscreen ready check to remove the hierarchy requirement (266426@main) Fixed videos disappearing when switching from landscape to portrait (266531@main) Fixed pausing media playback after suspending media playback to correctly pause after media playback is unsuspended (266590@main) JavaScript Optimized Array#splice to skip result array creation if it is not used at all (266591@main) Web API Fixed intermittent removal of adoptedStyleSheet CSSStyleSheet instances when assigning an adoptedStyleSheet array (266464@main) Fixed keyboard scroll not stopping after pressing the down arrow if keyup is default prevented (266425@main) Fixed window.postMessage with OffscreenCanvas with an isolated world message listener (266465@main) Accessibility Fixed non-accessible content within iframes with ARIA roles (266506@main) Fixed VoiceOver word echo on text inputs with a combobox role (266569@main) Apple Pay Deprecated enabled in favor of available in shippingContactEditingMode (266493@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 180 Release Notes](safari-technology-preview-release-notes/stp-release-180.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 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)