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>
		);
	}

Commencez par exécuter la reproduction iOS fournie avec KeyboardAvoidingView, ScrollView et un TextInput multiligne, puis suivez le comportement pertinent de React Native concernant l’évitement du clavier et la saisie de texte. C’est terminé lorsque le champ de saisie multiligne est défilé au-dessus du clavier virtuel dans la disposition signalée, sans régression pour le cas sur une seule ligne.