Edited by CM!
Update: Good news! This issue should now be fixed ✅
A new game version has been released on iOS and Android (Google Play) with the fix: 1.321.3.1.
Please head to the App Store / Google Play and update Candy Crush (you may need to refresh the store, and it can take a little time to show for everyone).
No need to reinstall.
If you’re still having the background audio issue after updating to 1.321.3.1, reply here and we’ll take a look. Thanks again for your patience!