Laravel Job Queue not processing using Redis driver

I'm creating a job, pushing it on to a custom queue, and trying to use the Redis driver to then handle the job when it hits the queue, without success:

class MyController extends Controller {
    public function method() {
        $job = (new UpdateLiveThreadJob())->onQueue('live');
        $this->dispatch($job);
    }
}

Here is my queue config:

    'default' => env('QUEUE_DRIVER'),

    'redis' => [
        'driver' => 'redis',
        'connection' => 'default',
        'queue'  => 'default',
        'expire' => 60,
    ],

Here is my .env file:

# Drivers (Queues & Broadcasts)
CACHE_DRIVER=file
SESSION_DRIVER=file
QUEUE_DRIVER=redis
BROADCAST_DRIVER=redis

Here's my job:

class UpdateLiveThreadJob extends Job implements SelfHandling, ShouldQueue
{
    /**
     * Create a new job instance.
     *
     * @return void
     */
    public function __construct()
    {
    }

    /**
     * Execute the job.
     *
     * @return void
     */
    public function handle()
    {
        // Rerender content
        $templatedOutput = view('templates.livethreadcontents')->with([
            'updates' => collect(Redis::lrange('live:updates', 0, -1))->reverse()->map(function($update) {
                return json_decode($update);
            })
        ])->render();

        // Connect to external service

        // Update Thread
    }
}

Indeed, I can change the handle method to do nothing to ensure it's nothing in the job that's actually causing it to fail, and it still doesn't process:

    /**
     * Execute the job.
     *
     * @return void
     */
    public function handle()
    {
        print_r('test');
    }

Using Redis, I can see it's pushed onto the queue:

> lrange queues:live 0 -1
> // json encoded job present
> llen queues:live
> // shows there is a job in the queue

Yet, it never actually fires, to my knowledge. Watching php artisan queue:listen shows nothing (only unrelated event broadcasts). What's going on here?