Adding Referenced civicrm_entity contact in node with email, address and phone doesnt work
So I've done some development to enable CiviCRM Entity Reference (CER) fields that target CiviCRM Contacts, either via the Drupal contact edit form "/civicrm-contact/add" or via an entityreference field targeting contacts (which form has CER fields attached), that can be on nodes or other entity types, using the Inline Entity Form Single widget.

Its available now on the -dev version of CiviCRM Entity, and will be in the next beta.

Support for the Inline Entity Form Multi widget is not yet included, it will take another small leap to get it working there, although the foundation is now laid.

The functionality for inline entity forms on either reference field type has worked and continues to work for node/entity edits.