Hi, it pops up randomly once in a while.
In general I have to say the the synth is very buggy and in very random ways making it difficult to reproduce and explain the issues.
Some problems are surely related to prolonged use and humidity, maybe the fact that I live in Thailand doesn't help. Sometimes it starts to have odd behaviors and when I clean all electric sensors like keys and pitch etc it goes back to normal functioning. Other times I need to turn the synth off and on in order to get in back on horse.
But in general these issues doesn't give the confidence needed to perform live.