I use Carplay everyday on my commute and while using maps (Waze, Google or Apple Maps) the screen occasionally glitches. It's just a quick flash that if you aren't looking directly at the screen it might not be that noticeable. It's typically the bottom half of the screen including the buttons...
Great job on getting a good deal! Were the parts from a gladiator or a wrangler? Just wondering what parts from a wrangler will fit. Obviously tons more wrangler parts available right now.