Wordpress, Woocommerce, Oxygen Builder, MetaBox + MetaBox AIO.
I added one custom post type and 4 custom taxonomies.
Taxonomies were applied to WooCommerce products.
All worked fine.
I changed a WooCommerce setting: Product Reviews.
When they are on, the custom content from MetaBox dissapeared.
However, turning them off does not help and only deactivating whole WooCommerce plugin makes the custom content show up.
The custom post type is not visible on the backend and cannot be targeted by the taxonomies. The taxonomies do not appear under the WooCommerce product.
Deactivation of WooCommerce makes the custom post type appear.