No Auro3D Passthrough

While playing my original bluray with the movie Pixels and Auro3D sound selected, i noticed my Denon X5200W only receives 5.1 channels from Kodi while the Auro3D-stream contains 11.1 channels in this movie.

Using PowerDVD 15 the sound gets passed through correctly.

Is there any way to remove passthrough conditions in Kodi, and make Kodi always pass the audio through to the HDMI output unmodified ?
Perhaps it could help to add speaker-setups for Auro3D using 9.1 /10.1 / 11.1 speaker channels.

http://www.auro-3d.com/

Using Kodi 17 latest nightly build on Windows7