Xperia Z2 :: Notifications And Alarms Output Through Speaker And Headphones

Sound in speaker while headphones connected?Calls ringtone and messages notification sound go from speaker AND heaphones at the same time [ New.however I was hoping there would be an improvment of some sort in the meantime.
 
Behavior right now:
- Plug-in headphones (original XperiaZ2 gear)
- Play music
- Notifications mute music in headphones (but no ringtone is played), ringtones are output through speaker (Why? I cannot hear them there, since the original Xperia headphones are noisecanceling ... :-/ ). 
- Same goes for alarm-sounds too!
 
Now imagine the following: You sit in a train / bus / whatever public transportation, and you know you're tired and think "I better set an alarm, so I won't miss my stop". Even better, I plug-in headphones such that my alarm won't anoy my fellow passengers. Great idea! But wait, with this "feature" you won't just only anoy other people but also miss your stop since YOU don't hear the alarm, but everybody else does..Isn't there a better solution, than just mute all sounds aside from music? This in fact only solves the "anoy"-part, which is the littler issue in the above case.