Kotlin couroutines: SharedFlow emit from collect

sharedFlow.kt

import kotlinx.coroutines.*
import kotlinx.coroutines.flow.*
import java.util.concurrent.Executors
import kotlin.system.exitProcess

val dispatcher = Executors.newSingleThreadExecutor().asCoroutineDispatcher()
val scope = CoroutineScope(dispatcher)

fun main() {

    val n = 1 // this will print 1 to 8, 42, and 9 and exit
    val sharedFlow = MutableSharedFlow<Int>(n)

    scope.launch {
        for (i in 1..10) {
            delay(30)
            sharedFlow.emit(i)
        }
    }
    scope.launch {
        sharedFlow.collect {
            println("collect: $it")
            if (it == 8) {
                sharedFlow.emit(42)
            }
            else if (it == 9) {
                exitProcess(0)
            }
        }
    }
}

if you set n=0, this hangs on 8.