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## Summary
**React Version:** 18.2.0 (also tested in 19 RC)
After transitioning from the legacy renderer to the concurrent renderer, we've encountered an issue with render delays when using `Rea…
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Hello!
As part of my work with the [Chrome Aurora](https://developer.chrome.com/docs/aurora) team, I’ve been working with image-focused React libraries to help improve application performance (meas…
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This is a duplicate of https://github.com/facebook/react/issues/27573, which was closed without response. We're noticing this issue at scale, and it's fairly pronounced, with hundreds of rapid re-rend…
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Initializing a lazy signal will not trigger a Widget rebuild as `.value` maybe out of the logic execution (_if condition_) as `isInitialized` bar it.
We need the way to register `signal()` under `W…
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### Current behavior
Mui x grid runs so slow on localhost (even the performance is far better with production build. but still the problem is there), the scroll is laggish, and laggin when I have …
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### Describe the bug
I'm using a react component like
```ts
import { lazy, Suspense } from "react";
const Lazy = lazy(() => import("./LazyCanvasPreload"));
const FullPageSpinner = () => spi…
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### Current behavior
I'm having an issue on an Android Pixel 6 (might happen on other devices but so far it is the only model that has this issue) where using a deep link opens a new instance of th…
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Quote from [here](https://hackernoon.com/boosting-react-app-performance-a-guide-to-lazy-loading-and-suspense):
> Lazy loading is a strategy that defers the loading of non-essential resources until th…
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### What kind of issue is this?
- [X] React Compiler core (the JS output is incorrect, or your app works incorrectly after optimization)
- [ ] babel-plugin-react-compiler (build issue installing o…
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### Description
I am getting this error when I build a new app from scratch with react native 0.73.3 and react-native-reanimated 3.6.2
```console
Error: Exception in HostFunction: java.lang.Unsat…