Bug: Cannot read property 'isCollapsed' of undefined/Some Components Missing in DevTools/Blank tab

[AveryTheDev]

I cannot view all of my components in the Components tab. Sometimes none. It has been occurring all morning and I do not know how to rectify this.

I cannot search for the components by name either. It is not there.

When I was attempting to highlight a component to see its props value, I got the below message after clicking on it to see if that would help as nothing was showing.

React version:

Steps To Reproduce

1. Start React App.
2. Open Dev Tools.
3. Go on Components tab.
4. Click on Component that is not displayed in dev tools Component tab.
5. Error message from above.

Same steps for a blank Component tab. Unfortunately, restarting the app does not seem to rectify the issue either. Seems to be an error with the extension itself but I thought I'd try here first.

[bvaughn]

Can you share a repro (e.g. the project you're trying to use that causes React DevTools to error)? I haven't seen this behavior before, or heard reports of it.

[AveryTheDev]

I can't share the repo as its my work repo. There was an error like this in the past but it was archived because the poster did not provide steps to reproduce

[AveryTheDev]

I'll see if this happens with another react project in case its a versioning thing with my dev tools

[bvaughn]

Hm. Yeah it's hard for us to do much without a repro. Could you try creating a reduced case by removing things from your local app until you've gotten it as small as you can (while still seeing the error) and then sharing that small repro with us via Code Sandbox or something? The cause is often just a small thing.

May also be nice to find out the version of DevTools you've got installed and which browser/version you're using.

[AveryTheDev]

Unfortunately, it does seem unique to my work repo so I am not sure what has happened. I'll check to see if I have installed any new dependencies. That screenshot is the extent of my error message

[AveryTheDev]

Will do @bvaughn I am being pulled away for a moment but I will do my best to give you something more to work with within the next couple of hours

[bvaughn]

Thanks so much!

[AveryTheDev]

I am still investigating but I am providing the following information in the meantime, I hope this helps

Browser: Chrome

Browser version: Version 83.0.4103.116 (Official Build) (64-bit)

React Dev Tools Version
4.8.1 (7/10/2020)

[bvaughn]

Gotcha. Nothing too helpful there unfortunately. Same versions as me.

[gaearon]

@abrown945 For what it's worth, if your work repo is a publicly available product, and the issue reproduces in production, just seeing that page would be helpful too. Not necessarily the source code.