Bug: Uncaught Error: Commit tree already contains fiber "725". This is a bug in React DevTools.

Why this is a good first issue

This issue requires deep knowledge of React DevTools internals and experimental builds.

AI Summary

The issue involves an uncaught error in React DevTools related to commit tree management. A potential fix exists in an experimental build, but verification is needed. This requires specialized knowledge of React DevTools and access to experimental builds.

Issue Description

React version:

react: 19.2.3 react devtools 7.0.1

Steps To Reproduce

Load this data profiling-data.27-01-2026.22-07-13.json
press 100 in nav

Link to code example:

The current behavior

The error was thrown at updateTree (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:699600)
    at getCommitTree (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:698832)
    at $e.getCommitTree (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:703384)
    at CommitFlamegraphAutoSizer (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:1005870)
    at renderWithHooks (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:66940)
    at updateFunctionComponent (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:97513)
    at beginWork (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:111594)
    at performUnitOfWork (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:1:184246)
    at workLoopSync (chrome-extension://fmkadmapgofadop

GitHub Labels

Type: BugStatus: UnconfirmedComponent: Developer Tools