No recall.
There's a Ford service proceedure bulletin available on line if you want to know how to replace the panel. Do some searching, it's out there.
Did one and shot it in black. Makes the rear window look 5 feet tall but we didn't have to worry about color match.
This is panel cracking season. You won't see this problem nearly as much in warm climates. The problem is expansion rates of glass versus plastic. The adhesive Ford used is very rigid and pretty much makes the panel a part of the glass. Good idea if you want to keep it from falling off. Bad idea if you live where the temerature can get below 20 degrees F.
Get in Explorer. Outside and inside temps are the same, i.e. below 25 - 20 degrees. Drive away with heat on. Glass warms, plastic doesn't warm as much and is also brittle from the cold (the brittleness of the plastic is the problem that Ford should have figured out). Glass gets bigger and plastic doesn't want to go along so it cracks.
Want to make sure the panel cracks?
Drive when it's 2 degrees. Turn on rear window defroster. When the panel cracks it sounds like a rifle shot in the vehicle. I know.....
Ford should have to replace these panels with a panel that is fabricated from an entirely different plastic but in these days of de-regulation VW can get away with disolving plastic water pump impellers and self clogging oil pumps, GM can get away with coolant leaks, Toyota can get away with unintended acceleration, Chrysler can get away with 2.7 V6 engines that saw themselves apart with the timing chain......... Makes a busted chunk of plastic seem unimportant.
If you DO buy a new panel don't expect it to last any longer than your original unless you move to Florida or southern Arizona. Using a different, more flexible adhesive than what Ford recommends may be key in not having another crack but you run the risk of the thing falling off.
rds