H5 Quick Controls Problem - They Disappear

Halion, C8, Win 8.1.

Load Real Vintage Bass (for example) into a slot and the Quick Controls are visible, labeled and adjusted per sample preset.

Play project and as soon as the 1st midi note is received by the Bass Slot all of the quick controls disappears and the control knob set to 12 o’clock. Adjusting the controls: They are no longer active.

This is intermittent and I have yet to figure out the logic.

Anyone know why or how to stop this?