fun coroutinesAreSometimesDispatchedOntoDaemonThreads() = runBlocking<Unit> {
  println("Main. Thread: ${Thread.currentThread()}. isDaemon? ${Thread.currentThread().isDaemon}")

  val scope = CoroutineScope(Dispatchers.Default)
  scope.launch {
    println("Coroutine. Thread: ${Thread.currentThread()}. isDaemon? ${Thread.currentThread().isDaemon}")
  }
}

Main. Thread: Thread[main,5,main]. isDaemon? false
Coroutine. Thread: Thread[DefaultDispatcher-worker-1,5,main]. isDaemon? true

Dispatchers.Default

GlobalScope

Dispatchers.Default