React Developer Tools for Chrome giving warning on minified assets

I have minified my resources using Gulp uglify plugin rather than using webpack’s Uglify plugin as my application is getting bundled by gulp, But when I check react developer tools it is giving error This page is using an unminified build of React , but when i am checking chrome developer tools css and js is minified.

So can this be a bug in React developer tool? As the warning is quite misleading it seems to React developer tool is not checking the actual js or css file for minification, Also I have checked google page speed and it is stating that the assets are minified.

This is the warning message

Minified js