I'm using S25U, latest software and I did try uninstall and reinstall the TTApp.
As I scroll, and decide to leave the tiktok app, if I was on a Live by any chance, the Lives audio keep playing in the background.
I close the recent all. It still plays
I go back on tiktok to browse other videos. It still plays.
Only solution is to go Setting / Apps/ Tiktok/ Force close.
Not great fun. Help thanks