Turn off hidden conversations

How do you turn off this garbage:

Which, coupled with a full page refresh every time I accept a commit, with a list of 70, is the most utterly annoying de-enhancement ever.

EDIT TO ADD: and OMG as you get deeper into it, it becomes a NESTED set of hidden items.

And it is not hiding the COMPLETED actions, it is hiding the items THAT NEED AN ACTION. This has to be the most idiotic interface ever devised. What, did you people work for Microsoft or something?