User blog comment:Kirkburn/Syntax highlighting - helping you read and write code/@comment-452-20150410203600/@comment-5288784-20150410223539

So, in short, you believe there should be an option to disable syntax highlighting on css and js pages in part because the feature is still relatively new and there are occasional bugs like these. Agreed with that, being able to choose is the best solution from the user point of view.

It's still a bug to be fixed, nice catch with that. The tips above for putting up with this bug (until it's fixed) might still be useful for others.