Default TTR from config seems not to be apllied

What steps will reproduce the problem?

I am using this config:

'components' => [
   ...
    'queue' => [
        'class' => '\yii\queue\db\Queue::class', 
        'as log' => \yii\queue\LogBehavior::class,
        'db' => 'db', 
        'tableName' => '{{%queue}}', 
        'channel' => 'default',
        'mutex' => \yii\mutex\MysqlMutex::class,
        'ttr' => 600,
    ],

What's expected?

I expect that if I create a job without mentioning a specific ttr in the job, that it then takes the default value.

What do you get instead?

It always uses 300 s (as it is defined inside yii\queue\Queue : public $ttr = 300;

Additional info

Start at yii\queue\Queue::$ttr and trace how the configured queue component is used when a job is created without an explicit TTR. Reproduce the issue with the shown database queue configuration and compare the effective value with the job-specific path; done when the configured 600-second default is used.