As stated, yes, it's "common." I have a 2019 MHC and one couch has been pealing for some time. Earlier this year I solved the problem:
Original before doing anything. The back cushions are pulled out, nothing wrong with them, it was the seat that was completely failing:
Kept the same couch / hide-a-bed. Nothing wrong with the frame or the actual cushions, only the material covering it. So, after my fix:
It took about an hour to do it. We got the self-adhesive vinyl material from Amazon. The only problem with it is, once it touches a surface, it's there to stay. So applying on a couch or chair REALLY does take 2 people to handle it. And if the sticky side touches the sticky side, it's near impossible to pull them apart. So... measure, measure, measure, then cut to size and have help applying.
This was a LOT cheaper than purchasing new furniture, especially these 2 couches that are in teh upper living room slide outs and are built specifically to fit those slides.