Marco, I’m not sure there is a bug.
Although not creating a derivative work, Sony would be distributing under terms of BY-SA, which would require them to provide license notice.
As Sony distributed under terms of BY-SA, anyone who wanted could take the track under those terms, which could include redistribution or derivatives, still governed by BY-SA.
So Sony can’t put ARR on a BY-SA work even if they don’t create a derivative.
But I could be missing something, as I’m not a lawyer, and I just miss stuff. :-)