No Sound through HDMI

Hi,

I’ve been using Kodi 16.1 since it’s released.

Yesterday I decided to test out Kodi 17 RC3 but I simply cannot get any sound when I play movies/series on my TV.
I use an HDMI 1.4 cable which I run from my computer to my TV.

In Kodi settings -> audio output I have my TV as audio output device selected. (DIRECTSOUND – HDMI – xxx)

This always worked with kodi 16.1. In Kodi 17RC3, no matter which audio output I select (directsound or wasapi)…I get no sounds at all?

I read the release document :
https://kodi.tv/kodi-v17-0-krypton-release-candidate-3/

and I noticed one other user (Gesu) there mentioning something about NO HDMI : No HDMI passtrough,no HDR Sad

Is this a known bug?

Thanks for any advice.