Been driving my new 2021 Performance for a few weeks now and love it so far, but I've had this issue happen probably 2 or 3 times now. It seems to happen right after I make a turn (which disengages the turn signal) and I immediately follow it up with another turn signal to switch lanes. The stalk doesn't seem to work again during this period for a few seconds, requiring me to push it up (or down) multiple times until I hear my turn signals come in. Anyone run into this too?