[Elecraft] K3/0 Audio mute when pressing SUB

[Björn SM0MDG]

I wonder if anyone else experience this;

I have a K3/100 controlled by a K3/0 using Remoterig. When pressing SUB or initiating diversity RX (from panel buttons or via N1MM) the audio output mutes. This also happens when doing operations like clicking the band map in N1MM. Touching the volume a little bring volume back to normal. 

Haven't been able to figure out if is just me missing some setting, or if its a bug. Anyone experienced this and found a solution or work around?

73 de Björn,
SM0MDG
VP2MSW
V21BM
SE0X