menu doesn't load – columns not defined in load-scripts.php

Hello,
I have a WordPress multisite installation where the admin menu isn’t showing under appearance > menus since updating to 4.4.2

The error that I get in the console is:

Uncaught ReferenceError: columns is not defined
load-scripts.php:82

It is working on one of the other sites in the same multisite install though.

I created a new test site in multi site and the menu works there. I activated all of the plugins and it still worked. I deactivated all the plugins on the other site one by one and couldn’t find anything. I tested the test site using the same theme as is on the broken sites and it didn’t break.

I couldn’t find any more debug errors related to this problem. I tried replacing the load-scripts.php file.

Any tips on how I can resolve this issue?
Thanks