I'm not even sure, because it doesn't happen in js files.
So as I'm writing in scss files, after a debounce of what seems like 300ms, without saving the file, webpack-dev-server hot reloads the sass bundle.
I don't know what other info to provide. Ask me anything? :}
Please try disabling Live Edit
plugin. Related ticket: https://youtrack.jetbrains.com/issue/WEB-7093