addListener called on UI thread when Skia Canvas uses Reanimated SharedValues (Expo SDK 55)

[miguelartazos]

After upgrading to Expo SDK 55, the app crashes with: Worklets] Tried to synchronously call a non-worklet function 'addListener' on the UI thread

Environment:

• Expo SDK 55
• react-native-reanimated 4.2.1
• react-native-worklets 0.7.1
• @shopify/react-native-skia 2.4.21

Reproduction:
The crash happens when a Skia Canvas receives Reanimated SharedValues as props (e.g. height={topHeight}, y={bottomY}). It occurs when the component mounts.

Hypothesis:
Reanimated's mapper (which runs on the UI thread) appears to call addListener when Skia subscribes to SharedValue changes. addListener is a JS-thread API, so calling it from the UI thread triggers the crash.

Workaround:
Disabling the component that uses Skia + SharedValues (or replacing it with View + useAnimatedStyle) avoids the crash.

Has anyone else seen this? Any suggestions for using Skia with Reanimated SharedValues on SDK 55?
Environment:- Expo SDK 55- react-native-reanimated 4.2.1- react-native-worklets 0.7.1- @shopify/react-native-skia 2.4.21**Reproduction:**The crash happens when a Skia Canvas receives Reanimated SharedValues as props (e.g. height={topHeight}, y={bottomY}). It occurs when the component mounts.**Hypothesis:**Reanimated's mapper (which runs on the UI thread) appears to call addListener when Skia subscribes to SharedValue changes. addListener is a JS-thread API, so calling it from the UI thread triggers the crash.**Workaround:**Disabling the component that uses Skia + SharedValues (or replacing it with View + useAnimatedStyle) avoids the crash.Has anyone else seen this? Any suggestions for using Skia with Reanimated SharedValues on SDK 55?