I think this question has been talked about in another threads/forums.
but I can't find any thread that matches my problem.
To my problem:
When I listen to spotify(using bluetooth headset Sony SBH50) and receive a notification or use TTS, the bluetooth sound get maxed out.
I can't lower the sound until the notification//TTS sound is finished.
It started after last update of spotify
Tested another headset (MW600) and I get the same problem, just it has it's own sound settings so I don't get deaf.
If I don't use BT headset I see that the sound get bumped up abit too but not maxed.
Inactivated tasker, same problem.
I have resettet the SBH50 headset and updated firmware.
Tested a mp3 file in xiialive and total commander(music player).
The music get a bit muted during the notification and then back to the same volume level. So sound is not maxed.
Tested Audible and it has a pause function on notification but no maxed out volume.
Solution / workaround
Solution: ? or to get Spotify fix the problem if it's a bug in the app.
Workaround: Was to change settings files to hard set the max BT volume to 50% of what is max today. If it can be done.
Uses Tasker, don't have any sound alterations tasks.
Used xposed and GravityBox but exposed is deactivated.
Only good side, is that this forces me to listens to some books I have put on hold for a year.
Note: I have dyslexia so if there is anything you don't understand just ask...