I have a little problem at my Magento 2.2.5 store. When a combination of a configurable product is not on stock, the swatch should be disabled with a red strike. But at my store no swatch is disabled, as you can see at the following screenshot:
Actually, the Large size and green color isn't on stock. So it should be:
Is somebody know what to do? If i want to select this combination and put it in my cart, i get the error "not on stock"