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Fix setState ignored in Safari when iframe is added to DOM in the same commit #23111

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merged 3 commits into from Jan 18, 2022

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gaearon
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@gaearon gaearon commented Jan 14, 2022

Fixes #22459.

I'm not confident this is the best place to fix it.

Here's a minimal repro:

document.getElementById("app").innerHTML = `
<button onclick="addIframe()">add iframe</button>
`;

window.addIframe = function addIframe() {
  queueMicrotask(() => {
    console.log("--- in microtask ---");
  });
  console.log("will add iframe");
  const iframe = document.createElement("iframe");
  iframe.src = "localhost";
  document.body.appendChild(iframe);
  console.log("did add iframe");
};

https://codesandbox.io/s/fervent-turing-7rqyl?file=/src/index.js

In Chrome and FF, the order of the logs is:

will add iframe 
did add iframe 
--- in microtask --- 

In Safari, the order is:

will add iframe 
--- in microtask --- 
did add iframe 

So microtasks don't necessarily run on a clean stack. (Doesn't this violate the spec?)

Since this breaks our assumptions, my strawfix is to ignore the callback if it's called at a bad time. However, I'm not sure it's sufficient. (Are we guaranteed to always flush them at the end anyway? I think so.)

Note that to debug this locally you'll need to serve from http. I couldn't repro with file protocol.

Test plan: Sandbox from #22459 works now.

@facebook-github-bot facebook-github-bot added the React Core Team Opened by a member of the React Core Team label Jan 14, 2022
@gaearon gaearon requested a review from acdlite January 14, 2022 19:01
@gaearon gaearon changed the title Fix setState being ignored in Safari Fix setState being ignored in Safari when iframe is added to DOM during the same commit phase Jan 14, 2022
@gaearon gaearon changed the title Fix setState being ignored in Safari when iframe is added to DOM during the same commit phase Fix setState ignored in Safari when iframe is added to DOM in the same commit Jan 14, 2022
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sizebot commented Jan 14, 2022

Comparing: 51947a1...d610003

Critical size changes

Includes critical production bundles, as well as any change greater than 2%:

Name +/- Base Current +/- gzip Base gzip Current gzip
oss-stable/react-dom/cjs/react-dom.production.min.js +0.05% 129.66 kB 129.72 kB +0.03% 41.57 kB 41.58 kB
oss-experimental/react-dom/cjs/react-dom.production.min.js +0.05% 134.80 kB 134.86 kB +0.06% 43.09 kB 43.11 kB
facebook-www/ReactDOM-prod.classic.js +0.02% 428.08 kB 428.15 kB +0.05% 78.65 kB 78.69 kB
facebook-www/ReactDOM-prod.modern.js +0.02% 417.80 kB 417.87 kB +0.05% 77.19 kB 77.23 kB
facebook-www/ReactDOMForked-prod.classic.js +0.02% 428.08 kB 428.15 kB +0.05% 78.66 kB 78.70 kB

Significant size changes

Includes any change greater than 0.2%:

(No significant changes)

Generated by 🚫 dangerJS against d610003

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Fix makes sense! It's an unfortunate browser bug, though. Anything to do with the work loop, especially around reentrancy, is super fragile and easy to mess up. But I think your fix is the safest option.

Hopefully it gets fixed upstream soonish.

@gaearon
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gaearon commented Jan 18, 2022

Filed as https://bugs.webkit.org/show_bug.cgi?id=235322.

@gaearon gaearon merged commit 790b524 into facebook:main Jan 18, 2022
@gaearon gaearon deleted the fix-setstate-safari branch January 18, 2022 18:25
facebook-github-bot pushed a commit to facebook/react-native that referenced this pull request Feb 9, 2022
Summary:
This sync includes the following changes:
- **[a3bde7974](facebook/react@a3bde7974 )**: Exclude react-dom/unstable_testing entry point from stable releases ([#23258](facebook/react#23258)) //<Sebastian Markbåge>//
- **[569093276](facebook/react@569093276 )**: Add onErrorShell Callback ([#23247](facebook/react#23247)) //<Sebastian Markbåge>//
- **[0dedfcc68](facebook/react@0dedfcc68 )**: Update the exports field ([#23257](facebook/react#23257)) //<Sebastian Markbåge>//
- **[9d4e8e84f](facebook/react@9d4e8e84f )**: React Native raw event EventEmitter - intended for app-specific perf listeners and debugging ([#23232](facebook/react#23232)) //<Joshua Gross>//
- **[1dece5235](facebook/react@1dece5235 )**: Add back warning with component stack on Hydration mismatch ([#23241](facebook/react#23241)) //<salazarm>//
- **[cd4eb116c](facebook/react@cd4eb116c )**: Revert "update node.js version for CI ([#23236](facebook/react#23236))" ([#23239](facebook/react#23239)) //<dan>//
- **[1d7728bf9](facebook/react@1d7728bf9 )**: update node.js version for CI ([#23236](facebook/react#23236)) //<sunderls>//
- **[848e802d2](facebook/react@848e802d2 )**: Add onRecoverableError option to hydrateRoot, createRoot ([#23207](facebook/react#23207)) //<Andrew Clark>//
- **[5318971f5](facebook/react@5318971f5 )**: Remove logic for multiple error recovery attempts ([#23227](facebook/react#23227)) //<Andrew Clark>//
- **[3a4462129](facebook/react@3a4462129 )**: Disable avoidThisFallback support in Fizz  ([#23224](facebook/react#23224)) //<salazarm>//
- **[0318ac2c4](facebook/react@0318ac2c4 )**: Revert 4f5449 //<Ricky>//
- **[4f5449eb4](facebook/react@4f5449eb4 )**: Remove main from scheduler `index.js` //<Ricky>//
- **[3f5ff16c1](facebook/react@3f5ff16c1 )**: [Hydration] Fallback to client render if server rendered extra nodes ([#23176](facebook/react#23176)) //<salazarm>//
- **[529dc3ce8](facebook/react@529dc3ce8 )**: Fix context providers in SSR when handling multiple requests ([#23171](facebook/react#23171)) //<Fran Dios>//
- **[505c15c9e](facebook/react@505c15c9e )**: Don't inject timeline hooks unless React supports profiling ([#23151](facebook/react#23151)) //<Brian Vaughn>//
- **[e12a9dfc9](facebook/react@e12a9dfc9 )**: Fix production-only updateSyncExternalStore() crash when doing setState in render ([#23150](facebook/react#23150)) //<Douglas Armstrong>//
- **[e48940255](facebook/react@e48940255 )**: Warn when a callback ref returns a function ([#23145](facebook/react#23145)) //<Dan Abramov>//
- **[d8cfeaf22](facebook/react@d8cfeaf22 )**: Fix context propagation for offscreen/fallback trees ([#23095](facebook/react#23095)) //<Dan Abramov>//
- **[d50482478](facebook/react@d50482478 )**: Enable scheduling profiler flag in react-dom/testing builds ([#23142](facebook/react#23142)) //<Brian Vaughn>//
- **[790b5246f](facebook/react@790b5246f )**: Fix setState ignored in Safari when iframe is added to DOM in the same commit ([#23111](facebook/react#23111)) //<Dan Abramov>//

Changelog:
[General][Changed] - React Native sync for revisions 51947a1...a3bde79

jest_e2e[run_all_tests]

Reviewed By: ShikaSD

Differential Revision: D34108924

fbshipit-source-id: 96acb66c1a7da79d6ef9403490cd0e29ad23d9fb
@gaearon gaearon mentioned this pull request Mar 29, 2022
zhengjitf pushed a commit to zhengjitf/react that referenced this pull request Apr 15, 2022
…e commit (facebook#23111)

* Fix setState being ignored in Safari

* Add a regression test

* Add comment
nevilm-lt pushed a commit to nevilm-lt/react that referenced this pull request Apr 22, 2022
…e commit (facebook#23111)

* Fix setState being ignored in Safari

* Add a regression test

* Add comment
shwanton pushed a commit to shwanton/react-native-macos that referenced this pull request Feb 13, 2023
Summary:
This sync includes the following changes:
- **[a3bde7974](facebook/react@a3bde7974 )**: Exclude react-dom/unstable_testing entry point from stable releases ([facebook#23258](facebook/react#23258)) //<Sebastian Markbåge>//
- **[569093276](facebook/react@569093276 )**: Add onErrorShell Callback ([facebook#23247](facebook/react#23247)) //<Sebastian Markbåge>//
- **[0dedfcc68](facebook/react@0dedfcc68 )**: Update the exports field ([facebook#23257](facebook/react#23257)) //<Sebastian Markbåge>//
- **[9d4e8e84f](facebook/react@9d4e8e84f )**: React Native raw event EventEmitter - intended for app-specific perf listeners and debugging ([facebook#23232](facebook/react#23232)) //<Joshua Gross>//
- **[1dece5235](facebook/react@1dece5235 )**: Add back warning with component stack on Hydration mismatch ([facebook#23241](facebook/react#23241)) //<salazarm>//
- **[cd4eb116c](facebook/react@cd4eb116c )**: Revert "update node.js version for CI ([facebook#23236](facebook/react#23236))" ([facebook#23239](facebook/react#23239)) //<dan>//
- **[1d7728bf9](facebook/react@1d7728bf9 )**: update node.js version for CI ([facebook#23236](facebook/react#23236)) //<sunderls>//
- **[848e802d2](facebook/react@848e802d2 )**: Add onRecoverableError option to hydrateRoot, createRoot ([facebook#23207](facebook/react#23207)) //<Andrew Clark>//
- **[5318971f5](facebook/react@5318971f5 )**: Remove logic for multiple error recovery attempts ([facebook#23227](facebook/react#23227)) //<Andrew Clark>//
- **[3a4462129](facebook/react@3a4462129 )**: Disable avoidThisFallback support in Fizz  ([facebook#23224](facebook/react#23224)) //<salazarm>//
- **[0318ac2c4](facebook/react@0318ac2c4 )**: Revert 4f5449 //<Ricky>//
- **[4f5449eb4](facebook/react@4f5449eb4 )**: Remove main from scheduler `index.js` //<Ricky>//
- **[3f5ff16c1](facebook/react@3f5ff16c1 )**: [Hydration] Fallback to client render if server rendered extra nodes ([facebook#23176](facebook/react#23176)) //<salazarm>//
- **[529dc3ce8](facebook/react@529dc3ce8 )**: Fix context providers in SSR when handling multiple requests ([facebook#23171](facebook/react#23171)) //<Fran Dios>//
- **[505c15c9e](facebook/react@505c15c9e )**: Don't inject timeline hooks unless React supports profiling ([facebook#23151](facebook/react#23151)) //<Brian Vaughn>//
- **[e12a9dfc9](facebook/react@e12a9dfc9 )**: Fix production-only updateSyncExternalStore() crash when doing setState in render ([facebook#23150](facebook/react#23150)) //<Douglas Armstrong>//
- **[e48940255](facebook/react@e48940255 )**: Warn when a callback ref returns a function ([facebook#23145](facebook/react#23145)) //<Dan Abramov>//
- **[d8cfeaf22](facebook/react@d8cfeaf22 )**: Fix context propagation for offscreen/fallback trees ([facebook#23095](facebook/react#23095)) //<Dan Abramov>//
- **[d50482478](facebook/react@d50482478 )**: Enable scheduling profiler flag in react-dom/testing builds ([facebook#23142](facebook/react#23142)) //<Brian Vaughn>//
- **[790b5246f](facebook/react@790b5246f )**: Fix setState ignored in Safari when iframe is added to DOM in the same commit ([facebook#23111](facebook/react#23111)) //<Dan Abramov>//

Changelog:
[General][Changed] - React Native sync for revisions 51947a1...a3bde79

jest_e2e[run_all_tests]

Reviewed By: ShikaSD

Differential Revision: D34108924

fbshipit-source-id: 96acb66c1a7da79d6ef9403490cd0e29ad23d9fb
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Bug: setState updater called but not rendered, in Safari, in concurrent mode
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