Distorted drum sound output from Peaks

Hi. I wonder if this behaviour is normal:

I have my Peaks in normal drum mode. I have knob 2&3 turned fully clockwise to get the hi-hat.
I power down the module (the whole rack actually).
I power on again and the hi-hat sound is much louder and has lower pitch than before power cycle.
I turn the knobs and the original sound returns.

It might be a bug… I’ll have a look.