Performance improvements and bug fixes in Sanity Studio

• Improves performance of the presence menu.
• Improves scrolling performance of document list pane views.
• Improves rendering performance when hovering over fields.
• Keeps tab focus inside popover dialogs for the Portable Text Editor when editing links and similar.
• Fixes a bug that could cause relative timestamps, such as those shown in the document history inspector, to incorrectly appear to be in the future.
• Fixes an issue where WebKit was unable to tab into a form field's action menu.
• Large Portable Text fields are now streamed into the editor.
• Fixes an issue that could sometimes leave the hotspot and crop icons greyed out after uploading an image.
• Unsafe access of current on React refs fixed, allowing React Compiler to auto-memoize more components, and increasing general stability and concurrent mode safety.
• Relative time stamps are optimized by React Compiler, reducing memory usage and allowing faster rerenders.
• Replaced React.createElement calls in internals with the JSX runtime, unlocking the React 19 performance improvements to JSX, as well as the ability to use ref as a prop instead of React.forwardRef wrappers.
• Refactored SanityDefaultPreview to be auto memoized by React Compiler, improving performance on document list previews, and reference selectors.

• Exports useReferringDocuments() hook.

To initiate a new Sanity Studio project or upgrade an existing one, please refer to our comprehensive guide on Installing and Upgrading Sanity Studio.

If you are updating from a version earlier than 3.37.0, you should also check out this article to ensure your