It is very annoying to change sound output in Elementary OS

[SteveFour]

Problem:
Changing sound output here just doesn't work.

Changing sound output here works, but I can't revert its settings once changed.

There's two sound inputs for my laptop (One integrated in the laptop, and one with my headset). I cannot switch between those at all. (I mean I can switch freely, but it doesn't work)

Temporary solution (for those who got the same problem as me):
The only way to switch audio output is to relaunch Settings app. And no solution to the audio input.

[SteveFour]

Also plug/unplug headphones/headsets doesn't work too.