Breaks JS on edit pages

Hi, thanks for the cool plugin. It seems this breaks js on the page edit pages though.. I’m not sure if this is a conflict with my theme (custom by WD company) or another plug-in, but I only have this problem when your plugin is activated. As a consequence I can’t use the add media button, or close any of the boxes (e.g. yoast or extra fields).

EDIT: I’ve checked with another site, same story

I hope you can have a look at this ??

Thanks,
Bob

https://www.ads-software.com/plugins/wp-custom-body-class/