Controlled Modal Freezes UI

[EmirGluhbegovic]

Is this a bug report?

Yes

Environment

Environment:
OS: macOS High Sierra 10.13.1
Node: 8.8.1
Yarn: 1.3.2
npm: 5.4.2
Watchman: 4.9.0
Xcode: Xcode 9.1 Build version 9B55
Android Studio: 3.0 AI-171.4408382

Packages: (wanted => installed)
react: 16.0.0-beta.5 => 16.0.0-beta.5
react-native: https://github.com/expo/react-native/archive/sdk-22.0.2.tar.gz => 0.49.3

Target Platform: iOS (10.3)

Steps to Reproduce

1. Create a controlled modal such as:

const Modal = ({ showModal, closeModal }) => (
 <Modal
 animationType="slide"
 transparent={false}
 visible={showModal}
 onRequestClose={() => {alert("Modal has been closed.")}}
 >
 <View style={{marginTop: 22}}>
 <Text>Hello World!</Text>
 <TouchableHighlight onPress={() => closeModal() }>
 <Text>Hide Modal</Text>
 </TouchableHighlight>
 </View>
 </Modal>
);

2. Trigger the modal from a parent component, such as:

<View>
 <Modal
 showModal={this.state.showModal}
 closeModal={() => this.setState({ showModal: false })}
 />
 <ScrollView>
 {elements.map(element => {
 return (
 <Card key={element.id}> 
 <Badge onPress={() => this.setState({ showModal: true })>
 <Text>Show</Text>
 </Badge>
 </Card>
 );
 })}
 </ScrollView>
</View>

3. Click open modal and it will open
4. Click Hide Modal it will close and then reopen and the UI becomes unresponsive

Expected Behavior

I would expect the modal would open and then close again and wait till I click show modal again.

Actual Behavior

Modal opens up and when I press close, it closes and reopens and the UI becomes unresponsive.

Reproducible Demo

https://snack.expo.io/ByuRT9lxM

What I found out so far

The issue originates from:

componentWillUpdate() {
 UIManager.setLayoutAnimationEnabledExperimental && UIManager.setLayoutAnimationEnabledExperimental(true);
 LayoutAnimation.easeInEaseOut();
 }

When I remove it all works as expected, so I guess there is some animation conflict?

Thank you and Regards,
Emir

[react-native-bot]

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