Media Library Broken in 4.5, JavaScript errors in load-scripts.php

I created a brand new installation alongside my current one, and even without any plugins or themes installed, I was not able to navigate the media library due to a javascript error.

The only thing I shared between the two sites was:

• images in the uploads folder
• the database
• settings for the database in wp-config.php

I followed the instructions on the debugging javascript errors page, but, unfortunately adding:
define('SCRIPT_DEBUG', true);
To wp-config.php fixed the issue.

I don’t know how, or why. I just know that it works now.