I have reported this previously (some time in 2025) but replying on this thread also.
@Suunto Tech Support - The app lowers the music volume for the feedback (e.g. “Started”), then returns music volume to the previous level. This is repeated during an activity for intervals, e.g. stats every 1km.
The problem arises occasionally when the volume will be lowered but no feedback is given, i.e. there is never a “Started” message. In this scenario, the music volume remains low, and there are no feedbacks during the course of the run.
When this happens on a training run that’s one thing. But this happened for the first time during a race (Brighton Marathon), and it’s not like I could just stop and reset everything! Also meant the whole marathon was without any stat feedback or music…