My 18 Ram just went through same problem. Screen delaminated from the top and spread down. Before it got too bad I ordered a new lcd monitor online. Local car audio shop swapped it out in 30 minutes. Common problem on 17 and 18 model years in all FCA. From what I’ve read LG has updated all the new replacement monitors with new part number. Sounded like they used bad adhesive in original part number. It’s a shame that FCA and UConnect doesn’t address this major problem. Only covered under warranty which is sad because this is such known widespread defect. Lots of folks get suckered into buying entire new 8.4 head units and it’s a simple 6 screw replacement of the LG monitor.