Did they remove the ability to highlight updates in React Dev Tools V4? I can't seem to find it anywhere. I do miss it so.
You know, this thing? 
The honest answer is we didn't quite have the time to implement it, and didn't consider it important enough to block all the other features from releasing.
You can read more about if they're going to implement it again here:
来源：https://stackoverflow.com/questions/57563530/react-devtools-highlight-updates-in-v4