Bell: Volume and Timing/Sync Issue #359

When bell is pressed and music is playing, the Volume starts rising immediately to the volume of the bell im the settings, the track wich is playing is then quiet loud. After 500ms or 1000ms something it that range, bell in zone 1 is ringing, after that bell in zone 2 is ringing. At the moment I have only 2 zones running. After bell was ringing in the second zone, music plays again as expected. that means bell is out of sync, it should be ringing in all zones simultaneously right?

Thanks!