Create field values for new fields in target content type not working

Problem/Motivation

When convert entity type and try to changes some field values which aren't that another content type and are empty option Create field values for new fields in target content type not working

Steps to reproduce

Content Type A has title and body field

Convert content type A

1) To content type B which has title, body and term fields

2) Body to body

3) Select Create field values for new fields in target content type

4) Put something on term value

5) are you sure, yes

Node is now content type B which has title and body values but term value is empty