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PS 1.7.6 in product page, product with combinations. When selecting a combination that's out of stock the Add to cart button becomes unavailable but the text with green check mark "This product is available" doesn't change to red icon with "Product available with different options". If the page is refreshed then the text will change. Same thing going backwards. If an available combination is then selected the add to cart button becomes available, but the text "Product available with different options" doesn't change to "This product is available" until page is refreshed. How to fix this? Thanks.