Commerce product images are not available to the block

Problem/Motivation

Image fields on commerce products are not used by the block.

Steps to reproduce

Create a product variation and add a 'field_product_image' field on the product variation. Create a product of the variation. Place advanced_title_block and you would not find the 'field_product_image' field as an option to use for image background. What would show is the default 'field_image'. Now create a 'field_image' field on the product variation since that was the field name available to the block, yet no image background is displayed.