So sorry, that cr@p is a PITA to remove. I’m sure you’ll get it off eventually but tear up the cosmetic appearance doing so. Unfortunately the solvents needed to remove LOCA remove paint and deteriorate plastic. Hope you get them working or find a used switch bank that doesn’t cost a fortune.No it hasn't been replaced and yes I am aware of the issue with the 2018s. My last one was also a 2018 and I replaced the radio in it. I am going to be replacing the screen in this one down the road. I mentioned in one of my threads that the glue is the glue from the screen. It's not showing signs of delamination but it is.
I've removed the switch panel and tried cleaning with isopropyl and all it did was essentially remove some of the paint from the buttons. I've got to attempt to disassemble the switch panel to get underneath the buttons.. that's where the glue is sticking.
I did try electrical contact cleaner as well and it had no effect.