We’ve encountered a bug, where if the certain variation of a product lacks images assigned in the gallery, the images assigned to the previous variations in the list are shown instead. Website contents are not cached, and no 3rd party plugins influence this.
Please see examples mentioned below.
Sorry to hear about the inconvenience. Kindly, please share your Site WP-ADMIN Login details in the Private Content field so that we can check this concern on your Site and help you out accordingly.