Sound repeating bug

I have experienced a bug, sound repeating one.

It happens when I open inventory just after I made some sound (picked up something, or broke something...) and then when i close it the sound repeats...

Here is the video:
(the volume is pretty high so be aware)

http://www.youtube.com/watch?v=zUI7DPmkaQY&feature=youtu.be

As you can see (or ,better, hear) bug is not appearing always, but most times it is...
This bug in not big, but it really annoys me...
and it happens in both survival and creative