Durable activity failures are not propagated to orchestrator in fan out/fan in pattern

At one point #572 was fixed with this pull request https://github.com/Azure/azure-functions-powershell-worker/pull/571.

If I do a single activity execution, the exception is propagated back up to the orchestrator. Good 👍

If I implement a fan out/fan in pattern like below, I don’t get errors and only the activities that succeeded populate the $tasks variable.

$ErrorActionPreference = "Stop"

$ParallelTasks = foreach ($file in $FailedFiles) {
    # Create $FileDetails object
    Invoke-DurableActivity -FunctionName "ProcessAuditFileActivity" -Input $FileDetails -NoWait
}

$tasks = Wait-DurableTask -Task $ParallelTasks

# 1 out of 2 tasks fails, $tasks only has one result and no errors from the failed activity, or exceptions thrown

[cgillum]

Pinging @davidmrdavid for a quick triage.

[davidmrdavid]

My apologies for the delayed response, @ruankr. I replied on the other thread: https://github.com/Azure/azure-functions-durable-powershell/issues/65#issuecomment-1664381888