Layout Builder breaks when moving a element.

Good day Kriesi,

Thanks for the awesome support over the last 3 years, your theme has been a crucial part in my business.

I am currently developing a site for a client, however 50% into the project the layout builder became broken, I can add new elements but whenever I try to change the layout by moving any of these elements or placing any of the elements in a specific place, it freaks out.

I have updated the theme to the latest version and also made sure the WordPress version is most current, I also tried deactivating all possible plugins to no success. Next I tried using firebox which was still unresolvable.

Please help me solve this problem in a timely matter.
Kind regards.