Given the following sealed class hierarchy: ```sea...

# announcements

[tseisel]

Given the following sealed class hierarchy:

sealed class LoadRequest<out T> {
  object Pending : LoadRequest<Nothing>()
  class Success<T>(val data: T) : LoadRequest<T>()
  class Failure(val error: Throwable) : LoadRequest<Nothing>()
}

When writing the following code with Kotlin 1.4, I have a warning telling me that the following cast is unnecessary:

val someFlow: Flow<String> = ...
val requestFlow: Flow<LoadRequest<String>> = someFlow
  .map { LoadRequest.Success(it) as LoadRequest<String> }
                                 ^^^^^^^^^^^^^^^^^^^^^^
  .onStart { emit(LoadRequest.Pending) }
  .catch { emit(LoadRequest.Failure(it) }

But removing it makes onStart and catch incompatible with the type of the returned Flow.
Is this some new compiler inference bug ?