KeyboardAvoidingView has no effect on multiline TextInput

KeyboardAvoidingView only works with single-line TextInputs. When the multiline prop is set, KeyboardAvoidingView does not shift the TextInput at all.

Is this a bug report?

Yes

Have you read the Contributing Guidelines?

Yes

Environment

Environment:
OS: macOS Sierra 10.12.6
Node: 7.0.0
npm: 3.10.8
Watchman: 4.7.0
Xcode: 9.1

Packages: (wanted => installed)
react-native: 0.49.3
react: 16.0.0-beta.5

Target Platform: iOS (10.3)

Steps to Reproduce

1. Use a <TextInput> component with multiline prop set.
2. Wrap this in a ScrollView
3. Wrap that in a KeyboardAvoidingView.

Expected Behavior

Multiline TextInput should scroll above the soft keyboard.

Actual Behavior

Soft keyboard covers multiline TextInput.

Reproducible Demo

import React, { Component } from 'react';
import { Text, TextInput, View, ScrollView, KeyboardAvoidingView, Keyboard} from 'react-native';

...

	render() {
		return (
			<KeyboardAvoidingView style={{flex:1}} behavior="padding" keyboardVerticalOffset={64}>
				<ScrollView keyboardShouldPersistTaps={'handled'}>
					<View style={{padding: 12}}>
						// various content to fill the page
						<Text style={{fontSize: 20, padding: 40}}>MESSAGE 1</Text>
						<Text style={{fontSize: 20, padding: 40}}>MESSAGE 2</Text>
						<Text style={{fontSize: 20, padding: 40}}>MESSAGE 3</Text>
						<Text style={{fontSize: 20, padding: 40}}>MESSAGE 4</Text>
						<Text style={{fontSize: 20, padding: 40}}>MESSAGE 5</Text>
						<Text style={{fontSize: 20, padding: 40}}>MESSAGE 6</Text>
						<Text style={{fontSize: 20, padding: 40}}>MESSAGE 7</Text>
						<Text style={{fontSize: 20, padding: 40}}>MESSAGE 8</Text>
						<Text style={{fontSize: 20, padding: 40}}>MESSAGE 9</Text>
						<Text style={{fontSize: 20, padding: 40}}>MESSAGE 10</Text>
					</View>
					<TextInput
						style={{padding: 4}}
						multiline={true}
						placeholder={'Type something here...'}
						onChangeText={this.updateMessage}
						value={this.state.message}
					/>
				</ScrollView>
			</KeyboardAvoidingView>
		);
	}

Comienza ejecutando la reproducción proporcionada en iOS con KeyboardAvoidingView, ScrollView y un TextInput multilínea; después, sigue el comportamiento relevante de React Native relacionado con la evitación del teclado y la entrada de texto. Se considera completado cuando el campo de entrada multilínea se desplaza por encima del teclado virtual en la disposición indicada, sin introducir regresiones en el caso de una sola línea.