redux-form: When are UNREGISTER_FIELD and REGISTER_FIELD events dispatched?

Are you submitting a bug report or a feature request?

Just asking info. Might be a bug.

Why am I asking this?

One of my fields keeps getting unregistered and registered after change or blur event on any field. Which destroys the error state and thus forcing me to use destroyOnUnmount: false on my form component.

What’s your environment?

From my package.json

"dependencies": {
    "axios": "^0.16.2",
    "prop-types": "^15.5.10",
    "react": "^15.6.1",
    "react-dom": "^15.6.1",
    "react-redux": "^5.0.5",
    "react-router-dom": "^4.1.1",
    "redux": "^3.7.2",
    "redux-form": "^7.0.0",
    "redux-logger": "^3.0.6",
    "redux-thunk": "^2.2.0",
    "semantic-ui-css": "^2.2.11",
    "semantic-ui-react": "^0.71.0"
  }

Also the HOCs used on my form component:

CreateJobForm = reduxForm({ 
  form: 'createJob',
  destroyOnUnmount: false
})(CreateJobForm);

const selector = formValueSelector('createJob');

CreateJobForm = connect(state => {
  return selector(state, 'device', 'brand', 'model' );
})(CreateJobForm)

export default CreateJobForm;

My Feild looks like this:

<Field name="location" type="text" label='Location(Pincode)'
    component={MyFeild}
    Comp={Form.Input}
    validate={[required, number, length(6)]}
/>

Other information

I know this might not be enough to identify the issue but i wanted to understand the problem better first.