[DevTools Bug]: Blank tools localhost only

[MadPeachTM]

Website or app

google.com

Repro steps

This started after last update 4.20.0

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

[github-actions]

@fanatig: We're sorry you've seen this error. ❤️

Unfortunately the URL you provided ("localhost") is not publicly accessible. (This means that we will not be able to reproduce the problem you're reporting.)

Please help us by providing a link to a CodeSandbox (https://codesandbox.io/s/new), a repository on GitHub, or a minimal code example that reproduces the problem. (Screenshots or videos can also be helpful if they help provide context on how to repro the bug.)

Here are some tips for providing a minimal example: https://stackoverflow.com/help/mcve

Issues without repros are automatically closed but we will re-open if you update with repro info.

[github-actions]

Thank you for providing repro steps! Re-opening issue now for triage.

[MadPeachTM]

Sorry for the
"Website or app
google.com"
But it just didnt work with
"Website or app
localhost"

[Sayvai]

I've just stumbled across the same issue, but i think i may have managed to find a workaround to the bug for now, which is to navigate to another external third-party React website (eg, ReactJS, Netflix, CNN), and then navigate back to your localhost site, while keeping Chrome DevTools React Developer Tools open throughout the process.

Give that a go?

Note: Not all external public third party React sites work with the workaround approach. So for example, navigating to other public React sites such as Facebook, Instagram, and Paypal does not appear to work as a temporary workaround.

---

Chrome @ 94.0.4606.81
React Developer Tools @ 4.20.0 (10/15/2021)

[MadPeachTM]

I've tried with netflix but it doesn't seem to work, sadly =( thanks for your advise anyways! may be it will help someone else

[Sayvai]

I've tried with netflix but it doesn't seem to work, sadly =( thanks for your advise anyways! may be it will help someone else

I've updated my original comment, with the addition of CNN React site, which is proven to also reliably work as a workaround for me, so try that too.

But also found it does not work with the PayPal React site as a workaround.

Besides that, i agree, this is a regression bug 🤔