Custom Enfold theme tab layout not compatible with WPML

I'm trying to create a new page with the Avia Layout Architect but there are some problems. I used the health check plugin to disable all plugins and tested if the tab works with my custom theme, which it does. However, as soon as I activate WPML, the tabs are broken. How they are broken is visible from the image attached. I have to state that I'm not sure if the tabs ever worked with WPML. I got the responsibility for the website but didn't design it and don't have too much knowledge about WordPress. Could you guide me towards a solution so that I can use the tabs with WPML? How would I go towards solving this?