Delete items in Tasks

How to delete items in task?

Click in the checkbox near the task.

I did that, but items still show in "Show All’ tab.

What I want is to permanently delete

I see. There is no currently such option in GUI. And i dont know where Spark is storing them. SPARK-975

Is there still not an option available for deleting the items in the task list so that they will no longer be visible

You can already do this with 2.6.0 Beta 2 ( is marked as fixed)