Yep. It's the most poorly designed switch ever. It will get worse too. 125 bucks from freightliner. The whole wiper system sucks honestly. RainX is your friend.
Glide, the wiper PARK circuit needs to be checked in order for the wipers to finally "park" and turn off. If there is a weak connection for this circuit, the wipers will continue to cycle while attempting for find a "park" location to turn off.