User Feedback: Experience immediate feedback when you initiate actions in React. The system now ensures that users receive a response from the UI promptly, enhancing the overall interaction experience.
Improvements
Testing Tools: Receive a warning when using TestUtils.act in non-document environments, helping you avoid potential issues during testing.
Fixes
Fix a compatibility issue with older versions of React, ensuring that newer renderers work seamlessly with them.
Resolve a regression that prevented react-dom/test-utils from being required in pure Node environments, restoring expected functionality.
Others
Revert the recent change to Scheduler.unstable_next to ensure stability while we evaluate the best approach moving forward.