react devtools not appearing

[andrewagain]

Looks like React Devtools are supposed to show up inline on the bottom-right side of the page now as per this merged pull request from Jan 25: #14675

However I've added "env": { "reactDevtools": true } to my cypress.json and they are not showing up. Are there any docs or instructions on how to make react devtools work with cypress component testing?

BTW - I have React Devtools showing up for regular cypress tests, but NOT component tests. It seems that this code in support/index makes things work for regular tests, but window:before:load is not called for component tests:

Cypress.on("window:before:load", win => {
  win.__REACT_DEVTOOLS_GLOBAL_HOOK__ = window.top.__REACT_DEVTOOLS_GLOBAL_HOOK__;
});