This isn't really a bug concerning cards combinations, but, instead, a bug in the interface. What generally happens is when I press the settings button it actually acts like a mute button, so if my volume is set to low and I click it, the volume is set to mute. If I were to close the menu and reopen settings, my volume would get reset to low.
It's nothing really that disastrous as it can be fixed by clicking the volume button, but it's still slightly annoying and isn't a bad idea for it to be removed