The 8.4 UAS and UAQ radios in the 2018 and early 2019 have delamination issues due to the wrong glue used by the touch panel manufacturer, LG. The reason they use refurbs is supposedly the refurbished radios have an updated touch panel with the proper glue holding the glass to the digitizer. My 2018 BigHorn had the same issues as the OP a few months back but I was at 40k miles and out of warranty. My local dealer offered a good faith replacement for $100. I received my vehicle back with everything working exactly as it did with the old radio. The dealer had my truck about four hours for the repair. Curious as to the explanation the dealer gave me about the delamination issue I pulled the new radio out of the dash and checked the part number of the touch panel. Sure enough the refurb radio had the new improved touch panel. The old LG part number ended with (SL)(01) and the new panel is (SL)(02). Of course I only paid $100 so I’m not complaining about a refurbished radio but a $1k plus repair for a refurb is a bitter pill to swallow.