Just upgraded to build 3170 and noticed that JavaScript inside a <script> tag where the type is application/javascript is no longer rendered as JavaScript syntax but instead is just plain text. This doesn’t conform to HTML spec (https://html.spec.whatwg.org/multipage/scripting.html#the-script-element) which states any JavaScript essence MIME type match (https://mimesniff.spec.whatwg.org/#javascript-mime-type) should be considered JavaScript.
I noticed the same issue with JSON embedded inside scripts (specifically with the type application/ld+json).