It somehow fixed itself yesterday. I didn't do a thing. I deliberately left Youtube open in the background, while in the middle of a video. Checked on it this morning and background activity is gone. The video continued playing from where I left off. In fact it played an ad before continuing lol.
Perhaps when I disabled background app fresh globally it took a few days to take effect Though Youtube itself I had always disabled background activity.
Perhaps when I disabled background app fresh globally it took a few days to take effect Though Youtube itself I had always disabled background activity.