WooCommerce Products Filter is broken

Hi, on my website the WooCommerce Products Filter is not working in one language but in the other language it is working.

Here it is damage (you can not filter by size or color in the left widget):
https://x-over-store.com/produkt-kategorie/alle-taschen/

Here it is OK (you can filter by size or color in the left widget):
https://x-over-store.com/en/product-category/all-bags/

Can anyone please help me, what to do?

Many greetings
Axel

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