Repeaters not growing/shrinking with collapsible boxes inside

When I used the old Editor, I used to populate my repeaters with collapsing/expanding boxes. As I clicked on the in-repeater icons, it would then expand and collapse the boxes accordingly on the repeater item, which would then grow/shrink the repeater to show the content. When I do this in Wix Studio, it sets all the repeater items to the same size and I end up with lots of white space in the other repeaters.

Does anyone know how to fix this?