UrbanNoodle Hi, Two customers complained. They choose a size on a shirt and the button stays grey as well. Started with WooCommerce 10.5 this week. Products without sizes add fine. Cleared the WP Rocket cache, no change: Is this a known 10.5 bug?
Andrew Its not really a bug: since version 10.5 the Add to Cart button stays disabled until the size and colour options have loaded. If your theme loads them late, or a caching plugin delays them, the button never wakes up. That would explain why products without sizes add fine and the shirts don't.
Andrew This is on WooCommerce's radar, A small fix update is expected for these products. In the meantime, i would turn the script delay off for the product pages in the caching plugin. That is the safe workaround until the update lands.
UrbanNoodle small update from my side: the fix update is out, installed it and the button works again on phone and desktop. Good.