Indexed objects loose association with attributes when indexed as array
ES creates the array at _content, not the object and therefore attributes can no longer be associated with their actual element.
Steps to reproduce:
Index any element with attributes as array.
Example: Find http://nbn-resolving.de/urn:nbn:de:bvb:12-bsb00029380-5
(from redmine: issue id 39, created on 2018-01-22tgradl, closed on 2018-01-22)