memo components show as Unknown in the timings section of Chrome

[xaviergonz]

Do you want to request a feature or report a bug?
bug report

What is the current behavior?

Given a component like

export const MyComponent = (p) => {...};
MyComponent.displayName = "MyComponent";

it shows properly as

but as soon as memo is added

export const MyComponent = memo((p) => {...});
MyComponent.displayName = "MyComponent";

it shows as Unknown instead

Note that both actually show properly on the tree explorer, the issue is only in the timings section of a performance recording in chrome.

What is the expected behavior?

It should show the proper name on the timings when memo is used

Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?

Windows 10, Chrome 74, React 16.8.x (the latest version that was available on April 26)

This issue got copied from react devtools repo since @bvaughn suggested it was actually a react bug
facebook/react-devtools#1340

[eps1lon]

This should be covered by #15313

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contribution.

[stale]

Closing this issue after a prolonged period of inactivity. If this issue is still present in the latest release, please create a new issue with up-to-date information. Thank you!

[alflennik]

I just ran into this issue - it is still occurring and should be reopened. The linked PR also hasn't yet been merged!