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RefreshControl on List doesn't work on iOS

See original GitHub issue

We have this Contacts component for displaying a refreshable list of contacts.

import React, { Component } from 'react';
import { RefreshControl } from 'react-native';
import { connect } from 'react-redux';
import { Button, Container, Content, Icon, List, Spinner } from 'native-base';
import PropTypes from 'prop-types';
import { cloneDeep } from 'lodash';
import { fetchAll } from '../../actions/contacts';
import { navigateToConversation } from '../../actions/conversations';
import ContactListItem from './ContactListItem';

class Contacts extends Component {
  static propTypes = {
    contacts: PropTypes.arrayOf(PropTypes.shape({
      id: PropTypes.string.isRequired,
    })).isRequired,
    fetched: PropTypes.bool.isRequired,
    handleConfirm: PropTypes.func.isRequired,
    handleRefresh: PropTypes.func.isRequired,
    refreshing: PropTypes.bool.isRequired,
  };

  constructor(props) {
    super(props);
    this.state = { contacts: cloneDeep(this.props.contacts) };
    this.onSelect = this.onSelect.bind(this);
  }

  onSelect(contactId) {
    const updatedContacts = this.state.contacts.map(contact => (
      contact.id === contactId
        ? { ...contact, selected: !contact.selected }
        : contact
    ));
    this.setState({ contacts: updatedContacts });
  }

  render() {
    const {
      fetched, handleConfirm, handleRefresh, refreshing,
    } = this.props;
    const { contacts } = this.state;
    const selectedContacts = contacts.filter(({ selected }) => selected);
    return (
      <Container>
        <Content>
          {
            selectedContacts.length
              ? (
                <Button onPress={() => handleConfirm(selectedContacts)}>
                  <Icon android="md-exit" ios="ios-exit" name="plane" />
                </Button>
              )
              : null
          }
          {!fetched && refreshing && <Spinner />}
          <List
            dataArray={contacts}
            refreshControl={
              <RefreshControl
                onRefresh={handleRefresh}
                refreshing={refreshing}
              />
            }
            renderRow={contact => (<ContactListItem
              {...contact}
              key={contact.id}
              onPress={() => this.onSelect(contact.id)}
            />)}
          />
        </Content>
      </Container>
    );
  }
}

export default connect(
  state => ({
    contacts: state.contacts.list,
    fetched: state.contacts.fetched,
    refreshing: state.contacts.fetching,
  }),
  dispatch => ({
    handleRefresh: () => dispatch(fetchAll(true)),
    handleConfirm: contacts => dispatch(navigateToConversation(contacts)),
  }),
)(Contacts);

We are able to refresh the list on Android but not on iOS.