Hey everyone! Just wanted to share that I’m consistently getting the “hydration failed because the server rendered HTML didn’t match the client” error in multiple projects inside Firebase Studio.
This includes brand new projects with clean layouts and Google fonts (like Inter) using standard setup with layout.tsx and basic client rendering via useEffect + useState.
I’ve tested multiple fixes (delaying font rendering, wrapping with use client, mounting check before rendering content, etc.), and even with all best practices, the error still appears.
After some digging and testing across machines and accounts, I strongly suspect the issue is not from our code but from Firebase Studio’s internal rendering, especially related to how Next.js hydration interacts with Google Fonts and layout snapshot mismatches.
If you’re seeing the same, you’re not alone and it’s safe to continue building your project. The hydration warning doesn’t break your app logic or stop rendering; it’s mostly a rendering mismatch React auto-corrects at runtime.
Hope this helps someone else stay calm and keep building 
Let’s keep an eye on Firebase updates and patch notes for an official fix 