aquaboy deluxe 2019 bypass squeal

[okeephoss]

pedal works fine, sounds great... all voltages are on point.  Except on bypass there is a high pitched squeal.  Turning the clock trim up all the way the squeal goes away.  when using the "tail" bypass there is zero squeal.  I'm cool with just leaving the effect bypass on all the time and using the tail as the bypass.  but I imagine something is amiss.  any input?