Parallel step does not finish in a scenario when host is restarted?

[jacquesgh]

Hi there!
I'm new to WorkflowCore and find it very useful but I ran into a weird scenario.
I might be missing something, if somebody could help that would be appreciated.

    public class WaitForOneOfTwoData
    {
        public string eventKey1 { get; set; } = string.Empty;
        public string eventKey2 { get; set; } = string.Empty;
    }

    public class WaitForOneOfTwoWorkflow : IWorkflow<WaitForOneOfTwoData>
    {
        public string Id => "WaitForOneOfTwo";
        public int Version => 1;
        public WaitForOneOfTwoWorkflow(){}
        public void Build(IWorkflowBuilder<WaitForOneOfTwoData> builder)
        {
            builder
                .StartWith<WorkflowStartingStep>()
                .Then<HelloWorld>()
                .Parallel()
                    // Workflow is waiting for both
                    // So, I need to publish the missing one
                    .Do(x => x
                        .WaitFor("e1", data => data.eventKey1)
                        .Then<PublishEventStep>()
                            .Input(step => step.eventName, data => "e2")
                            .Input(step => step.eventKey, data => data.eventKey2)
                    )
                    .Do(x => x
                        .WaitFor("e2", data => data.eventKey2)
                    )
                .Join()
                .Then<GoodbyeWorld>();
        }
    }

The 2 branches of a Parallel are waiting for their own event. If branch one receives its event, it publishes branch 2 event so that the Parallel step finishes.
What I am getting:
/// - If we run the workflow and publish event e1 in the same host.run session, both subscriptions
/// will be satisfied and the workflow will finish. That's what I was expecting.
/// - If we run the workflow, then restart the host and publish the e1 then the workflow
/// will not finish (subscription for e2 will not be filled).
/// - But then if we just stop and restart the host, then e2 is filled without doing nothing
/// and the workflow finishes.
It's as if restarting the host doesn't recreate the exact same execution state.
Any explanation?
Thanks