HELLO! I'm Korean User.
When my Smart-Watch (Garmin Forerunner 235) gave to me exercise information, temporary music volume reduction works well. But not, now. This problem maybe... because of recent update, a week ago. After uninstalling and reinstalling the app, problem is same.
<Setting - Audio focus setting - Short audio focus change - Temporary volume reduction> The problem is not fixed even if various attempts are made in the menu.
Please solve it.
The mobile phone is <Samsung Galaxy A5>, and the operating system is <Android 8.0 Oreo>.