async delegates execute ouside exception handlers

ActionInLimbo.cs

using System;

class ActionInLimbo {
	public static void Main() {
		Action frob_s = () => {
			throw new Exception(nameof(frob_s));
		};
		Action frob_a = async () => {
			throw new Exception(nameof(frob_a));
		};
		try {
			frob_s.Invoke();
		} catch (Exception e) {
			Console.Error.WriteLine(e.ToString());
		}
		try {
			frob_a.Invoke();
		} catch (Exception e) {
			Console.Error.WriteLine(e.ToString());
		}

		// Give frob_a enough time to execute
		System.Threading.Thread.Sleep(2000);

		// Watch the world burn.
	}
}