Should.CompleteIn deadlocks on single threaded synchronization context

[rick-palmsens]

Example:

using Nito.AsyncEx;
using Shouldly;

AsyncContext.Run(() =>
{
    Should.CompleteIn(async () =>
    {
        Console.WriteLine("Starting delay");
        await Task.Delay(100);
        Console.WriteLine("Delay completed");

    }, Timeout.InfiniteTimeSpan);
});

Expected output:

Starting delay
Delay completed

Actual output:

Starting delay