fix: defer the update in useIsSSR to avoid interrupting hydration #8842
+34
−14
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Closes #7474, #6728
This PR should fix issues that can occur during hydration in concurrent mode—for example, when using React.lazy and Suspense (e.g., https://stackblitz.com/edit/vitejs-vite-59bjdccr).
✅ Pull Request Checklist:
📝 Test Instructions: