React version: v17.0.1

Steps To Reproduce

1. Open the React Developer Tools extension on Chrome and navigate to the Profiler tab. Note the presence of the "Reload and start profiling" button.
2. Open the React Developer Tools extension on Firefox and navigate to the Profiler tab. Note the absence of this button.

The current behavior

The button is currently not present on Firefox.

The expected behavior

The button should be present and function as expected on Firefox.

Notes

It is frustrating and un-intuitive that certain browsers lack useful functionality. As it stands, I cannot diagnose lag that appears when starting up a React app on Firefox.

I see that there is code to explicitly disable the button on certain platforms. In order for this issue to be resolved, the required functionality must be reproduced on other platforms.