Hangfire EnqueueAt not being honored (due to queue being set)

I'm using Hangfire 1.6.12.

When trying to schedule/delay a task, the task executes immediately.

From the database, I can see the data reflecting the desired outcome (ie delay for 15 mins):
`Scheduled {"EnqueueAt":"2023-04-24T12:01:32.7745570Z","ScheduledAt":"2023-04-24T11:46:32.7745570Z"}`

but it is enqueued and executed immediately:
`Enqueued {"EnqueuedAt":"2023-04-24T11:46:32.7901759Z","Queue":"my-custm-queue"}`

Usage:
```IBackgroundJobClient hangFireClient = new BackgroundJobClient();
Timespan delay = Timespan.FromMinutes(15);
string jobId = hangFireClient.Schedule(task, delay);

// Put it on a specific queue
EnqueuedState queueState = new EnqueuedState(queue);
hangFireClient.ChangeState(jobId, queueState);
```

this is clearly due to the last two lines, but how would you schedule a task on a specific queue?