iOS: Full app crash

Description

I’m receiving the following error on iOS:

com.facebook.react.JavaScript (17): EXC_BAD_ACCESS (code=EXC_I386_GPFLT)

I’ve implemented a stories screen using react-native-navigation, and see this error when I quickly close the story (= unmount the screen) while (or shortly before) I run an animation with reanimated. In this case it’s a withTiming worklet.

This is my call stack at the time of the crash:

Screenshots

Steps To Reproduce

1. Create app using react-native-navigation and reanimated
2. Open and close stories like a maniac
3. At some point, close the story (and therefore unmount the screen) exactly when a worklet is being started, not sure it it’s caused by a timing function, or the timing function having a callback and then unmounting the Reanimated View.

Expected behavior

I expect the story to close and any reanimated worklets/animations/state to be disposed

Actual behavior

The app crashes with the error com.facebook.react.JavaScript (17): EXC_BAD_ACCESS (code=EXC_I386_GPFLT)

Snack or minimal code example

Working on this. Have to strip out a lot of things, not sure if I can easily replicate it using a simple example…

Package versions

• React: 16.13.1
• React Native: 0.63.2
• React Native Reanimated: 2.0.0-alpha7
• React Native Navigation: 7.0.0-snapshot2020