ReactDevTools extension doesn't work in private Firefox windows [DevTools Bug]:
Open
Nobody has claimed this yet.
Component: Developer Tools
Status: Unconfirmed
Type: Bug
- Dominant language
- JavaScript
- Stars
- 251k
- Forks
- 51.4k
- Avg merge
- 2d 4h
- Merged PRs (30d)
- 53
Description
Website or app
reactjs.org
Repro steps
- Install the ReactDev tools extension for Firefox ( I am running Firefox Dev edition Version 104.0b5 on Debian-Linux)
- Allow the extension to run in private WIndows by going to Add-ons and themes (Ctrl + Shift + A)
- Visit any website running a development or production of React in Firefox(I have tested Firefox dev Edition and FirefoxESR)
- Open Firefoxdevtools and visit the components tab added by the Reactdevtools extenstion
- I have tested a local dev build and a production build of React, and weirdly it works in non-private windows. But in Private windows, it doesn't see that the page uses React.
- Below is a screenshot of what I see on both websites

How often does this bug happen?
Every time
DevTools package (automated)
No response
DevTools version (automated)
No response
Error message (automated)
No response
Error call stack (automated)
No response
Error component stack (automated)
No response
GitHub query string (automated)
No response
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the reported steps in Firefox Developer Edition or ESR, first in a normal window and then in a private window, and compare the React DevTools Components tab. Investigate the React DevTools extension's private-window behavior; done means React applications are detected and the Components tab works in private windows as it does in normal windows.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript, react
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100