The touch sensor may be tapped unintentionally.
You can disable the touch sensor by changing the function of the touch sensor to [None assigned] using the Headphones Connect app.
Adaptive Sound Control may be set to ON.
Check the Adaptive Sound Control setting in the Headphones Connect app and turn it OFF.
NOTE: Adaptive Sound Control is a function that automatically switches the Ambient Sound Control setting after the app detects your movement pattern.