During our work with Magento 2 Rich Snippets module we’ve noticed that the product list page has numerous errors if switched to the list mode. The errors were generated by the standard Magento 2 Luma theme, when attempting to aggregate rating markup rendering for each product in the product list. This blog post describes a configurable fix for the issue. We will have an opportunity to disable this fix for any custom theme which doesn’t have this error or in case the next Magento 2 version has a fix for this included.