Why does the task run in all workers at once?

Question

Django

I'm trying to schedule tasks to run using Cron Jobs rq-scheduler: https://github.com/rq/rq-scheduler

scheduler = django_rq.get_scheduler('default')
scheduler.cron(
    "10 * * * *",
    func='jobparser.tasks.parse',
    queue_name='default',
)

The problem is that if more than one worker is running, then this task gets into all of them at once. At the same time, if you run it not through the scheduler, but manually, then everything is OK - the task is launched once in one of the workers: Am I doing something wrong or is this normal behavior and should I just allocate a separate queue with one worker for such cron tasks?
django_rq.enqueue('jobparser.tasks.parse')