strange passthrough sound

Hi,

Over night, my sound stopped working correctly, i am on Kodi Krypton beta5 running on Ubuntu 16.04

I have a Xonar pci soundcard, connected to my receiver over spdif , passthrough is enabled and pointing to the xonar.

if i play a movie with for example dts sound, my receiver confirms its getting dts sound from my pc.

I can hear the two back channels (i.e sorround) , but i cannot hear any speech/dialogue

If i disable passthrough, i can hear all sounds

Any ideas?

Debug Log here when i play a movie with dts :

http://paste.ubuntu.com/23489834/