Magento swatch is not disabled when configurable product is not on stock

Question

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"

Answer 1

I solved this issue by installing the following module:

https://github.com/mjankiewicz/MagentoConfigurableProduct

Answer 2

Try indexing :

• php bin/magento indexer:reindex
• php bin/magento cache:flush