I got a call from the pellet grill team today. They said they've only got a handful of documented cases of this happening, and in each, replacing the display took care of it. They're going to overnight a new display. Unfortunately, I spoke with them late in the day so it won't go out until tomorrow. Super helpful though and walked through a handful of other parts to ensure they're working properly and suggested they'd send any other needed parts as well. A+ for customer service, and hopefully, this will be the end of my issues for a long, long time.