Exception thrown while executing UI block: *** Collection <__NSSetM: 0x600000ff5820> was mutated while being enumerated.

Description

Hey

I’m experiencing the weirdest error ever => I’m using Modal component from “react-native” and my app didn’t have any issues. I started to use Layout transitions exiting and entering yesterday. Since then, everytime I’m dismissing a modal, I’m having this error and I can’t find out what it is :

It’s driving me crazy and I can’t have any more debugs logs to help me out. I really hope you can find a solution because my app is in production and I’m completely stuck

And last but not least => It’s happening randomly 🗡️, sometimes the modal will dismiss properly like 25 times in a row and at some point => error

Expected behavior

Nothing should happen

Actual behavior & steps to reproduce

An error is thrown.

Snack or minimal code example

Init a project with expo SDK 45 Install react native reanimated 2.8.0 Implement a simple Modal :

<View style={{flex: 1}} style={[styles.backdrop, modalVisible ? StyleSheet.absoluteFill : null]}>
<Modal animationType="slide" transparent visible={modalVisible} onRequestClose={onCloseClick} >
<Button onPress={onCloseClick} />
</View>

–>

Package versions

| name | version | | react-native-reanimated | 2.8.0 | | expo | 45 |

Affected platforms

• Android
• [ X] iOS
• Web