This happens to me too many times, i go for my “lead” sound and hit the tuner button. Result=mute. (The tuner button is close to fx button 4 that i use for lead sound)
What would be useful is a delay before the tuner kicks in, ie push and hold for a second or two.
Other (competitor) devices may access tuner by push and hold one of the fx buttons or similar. I know that push and hold on the kpa results in the chosen fx being a temporary apply for as long as the button is held so this may not be an option.
Might not suit everyone but perhaps an option to set the delay time for push and hold to engage the tuner.
Have tried smaller shoes but not good for the feet-ailments.
Other than reassign the tuner button, anyone got a solution or experience similar?