I've very sorry to hear about this. Could you link to a video or picture of this behavior?
i have a samsung UN55D6900. When i go into the smart Hub, the channel i was watching is displayed in the upper left side called PIG (Picture in graphic) my issue is that, for example, when i go into netflix and choose a movie, the sound from the channel displayed in the PIG is still being heard and not the netflix movie.
this is happening in all the apps i choose.
Any ideas how to get the sound from the app i choose? (for exampel if i choose a movie for netflix, i want the sound from the movie)