Settings for image WooCommerce

Hello

I have upgraded the theme, WP & WooCommerce about the same time so do not really know where my problem arose. The dilemma I have is that in WooCommerce the product image was previously square but now it doesn’t cropped anymore.

In WooCommerce >> Settings >> Products >> “Product Image Sizes” I find some settings but this change only the pictures when clicked onto the product.

Where do I find the settings for the displayed image (in which the product is displayed in a list with all the other products in the same category)?

(It is only the new pictures I upload now that I have this problem. I can choose the old pictures of my new product and then it will display the picture square.)