Multiselect dropdown search issue

If you goto this link , you will see 2 filters
Collections &
Manufacturer+ Model

For Manufacturer+ model it used to show the selected category , but for some reason it does not anymore. Please help as i do not see the dropdwon it used to show before either.

https://prnt.sc/cyanap

https://stylincases.com/shop/?swoof=1&pa_collections=fashion&product_cat=iphone-cases