mess.cs

class Program
{
    static async Task Main(string[] args)
    {
        try
        {
            await Task.Run(async () => await LongProcessAsync());
        }
        catch (Exception e)
        {
            // Can catch
            Console.WriteLine(e);
        }

        try
        {
            await Task.Run(LongProcessAsync);
        }
        catch (Exception e)
        {
            // Can't catch
            Console.WriteLine(e);
        }
    }

    private static async ValueTask LongProcessAsync()
    {
        // Context switch
        await Task.Delay(100);

        throw new Exception("Otanko🍆");
    }
}