# Safari 26.3 Release Notes Released February 11, 2026 — 26.3 (20623.2.7) ## Overview Safari 26.3 is available for iOS 26.3, iPadOS 26.3, visionOS 26.3, macOS 26.3, macOS Sequoia, and macOS Sonoma. ### CSS #### Resolved Issues - Fixed a style resolution loop that occurred when a `position-try` box was inside a `display: none` ancestor. (163691885) - Fixed an issue where anchor-positioned elements repeatedly transitioning from `display: block` to `display: none` cause position jumps during animation. (163862003) - Fixed an issue where `fixed`-positioned boxes using `position-area` were incorrectly included in the scrollable containing block calculation. (164017310) - Fixed an issue where `text-decoration: underline` was rendered too high when `text-box-trim` was applied to the root inline box. (165945326) - Fixed a multi-column layout issue where the `widows` and `text-indent` properties are applied cause an incorrect indent on the portion of the paragraph that flows into the next column. (165945497) - Fixed an issue where CSS cursors like `move`, `all-scroll`, `ew-resize`, and `ns-resize` did not display correctly. (166731882) ### DOM #### Resolved Issues - Fixed incorrect timestamp handling and switched to use the raw touch timestamp. (164262652) ### HTTP #### New Features - Added support for Zstandard content encoding in Safari 26.3 for iOS, iPadOS, visionOS, and macOS 26.3. (157682304) ### Media #### New Features - Fullscreen video playback on visionOS now automatically dims your surroundings to help you focus on the content. (164032895) #### Resolved Issues - Fixed an issue where the fullscreen button in visionOS inline video controls did not visually indicate interactivity by extending the glow effect to all `button.circular` elements. (164259201) - Fixed Video Viewer mode for `iframe` videos on macOS. (164484608) - Fixed an issue where Safari could not play live videos when the `sourceBuffer` content is removed and re-added causing the seek to not complete. (165628836) ### Rendering #### Resolved Issues - Fixed an issue where positioned or transformed `` elements containing HDR JPEGs with gain maps would incorrectly render as SDR. (163517157) ### Safe Browsing #### Resolved Issues - Fixed a bug where if Safe Browsing queried for an entry on the Public Suffix List, and a Safe Browsing vendor responded that the whole effective TLD was unsafe, the whole site would be marked as unsafe. (168155375) ### Web API #### New Features - Added support for firing an `AbortSignal` when a `NavigateEvent` is aborted. (164125292) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)