It was not a permanent solution. I think it’s my tv. I need no further help on this matter, just wanted to include this as this could help others.
EDIT: I need further help. I still can’t play my music in stereo without resetting the tv. OSMC/raspberry pi is the only device that causes problems with my tv, so it is a OSMC/raspberry pi thing as well as a tv thing.
EDIT: It is my tv.