WordPress Menu brakes

Hi there,

as soon as i activate this plugin i can no longer edit my menus (nav-menus).
In the console i find the following error message:

Uncaught ReferenceError: columns is not defined
 at Object.initToggles

Is this a known bug /error? Is there a solution for this? I could not find a solution or another bug report.

I have also deactivated all other plugins to check which plugin is causing this behaviour.