Alright I can confirm that I have the same issue as Ikuech has for single seat, I have audio is missing sometimes when changing channel. Running SVN 16039. I just think that its getting better... I have never missed any audio when zapping with SVN 15881 previously - if that can be of any help.
I can also confirm this problem with SVN 16043. No problem before with SVN 15898. If I turn off and back on TV everything works fine again.