Language CSS Uncaught Error events.js:82


When Language CSS is enabled, opening an empty css file (or creating a new one) causes the developer tools to open up and this error to occur:

Uncaught Error: Severity must be any of warning,error. undefined is passed.   events.js:82

Disabling Language CSS makes this issue go away, and if an empty css file is open, re-enabling causes the error immediately.