getWorkoutRouteSamples fails to retrieve complete route for activities with intervals

[maethub]

Describe the bug
Apple introduced WorkoutKit (https://developer.apple.com/documentation/workoutkit) in iOS 17 to allow users to have pre-programmed workouts (e.g. intervals for running) on their Apple Watch Fitness app. Since this is released, we see that activities using intervals fail to be transmitted completely to our app using react-native-health. The workout route is either not available or only in parts. After some investigation and debugging, we found the attached (screenshot) error:

Illegal callback invocation from native module. This callback type only permits a single invocation from native code.

[...]

__64-[RCTAppleHealthKit(Methods_Workout) workout_getRoute:callback:]_block_invoke_2

__82-[RCTAppleHealthKit(Queries) fetchWorkoutRoute:predicate:anchor:limit:completion:]_block_invoke_2

[...]

To Reproduce
Steps to reproduce the behavior:

1. Record a running activity with intervals (Outdoor Run > Custom)
2. Sync data from HealthKit using getAnchoredWorkouts and getWorkoutRouteSamples in Debug Mode
3. Error occurs and/or route data returned is not complete

Expected behavior
This behavior does not occur for workouts not using any pre-programmed intervals (e.g. Outdoor Run, Open Goal). It is expected that the intervals do not change how the route data is received

Screenshots

Smartphone:

• Device: iPhone 11 & Apple Watch Series 7
• OS: iOS 18.1 & WatchOS 11
• Version 1.18.0

Additional context
The workout shows complete data when looking at it in the iOS Fitness app.

[SerranoPablo]

I have a similar issue where I get gaps in workoutRoute data. This only happens when it is a structured workout.