3D FlipBook - elementor crocoblock jetengine smart filter Thumbnails hidden

Hi, We use 3D FlipBook (Version 1.11.1) along with Elementer Pro and Jet Engine Smart Filter. After activating a jetengine smart filter the thumbnails are hidden.

https://test01.reichardt-baumaschinen.de/ if you click on Liebherr you can see what we described.

How can we fix this?

Thanks!