Yes it happened to me and the part was leaning against the window and got very hot to the point it melted a decal I had on the outside. After I went to wipe it the window exploded.Anybody have this happen yet or am I just lucky? JLUS rear window defroster came unsoldered already, 4 months 2600 miles, very little off road? Rear window raised maybe dozen times at most, seems like a short life solder!!
Had it happen on my 2012 JKUS but at 50k and lots of off road!! Pain in the butt, dealer tried to re solder, crap job. Found a kit for repair with some kind of electrical epoxy compound, worked better but tricky.
I had the detached tab which the dealership fixed a couple of months ago and so far it has not detached again. However, it doesn't seem to me that the rear window defroster is actually doing anything. On the one occasion I had a slight frosting, or fogging, it did not seem like the defroster did anything as I saw no "lines" as the back window very slowly cleared. I think it was just clearing as the cabin warmed.Sadly with 6k on my 2018 JLU the tab came off my defroster. The dealer reattached it and now it has failed again less than 500 miles later. Funniest thing is I didn't even open the hatch. Awaiting a call back to see when I can drop it off for them to look at. Dumb problem, now a hassle during the winter with no defroster.