<!-- Please provide a clear and concise description of what the bug is. Include screenshots if needed. Please test using the latest version of the relevant React packages to make sure your issue has not already been fixed. --> Looks like you forgot about the debugger inside the react_devtools_backend.js. React dev tools version: 4.8.0 ## Steps To Reproduce 1. Update (or install) the latest version of devtools 2. Open devtools 3. The code will be stopped on the debugger inside react_devtools_backend.js  ## The current behavior If I open devtools with react dev tools extension it will stop every time on debugger inside react_devtools_backend.js ## The expected behavior It doesn't seem like it should be happening 😃