Is this a problem? We just bought a Schwinn Hinge from Amazon. Yes, I know it's not the best folder, but we wanted it for the camper and it's mostly used to get back and forth from the restroom. I had credit card points and it was basically "free". We had ridden a used Z-Bike a week ago at the local bike shop. The HInge rides much better than that, probably due to the 20" vs. 16" wheels.
Anyway, We're pleased with the Hinge. Looks to be well built and it survived the trip from Amazon OK.
I don't like how the front gear/chain rests on the ground when it's folded. Is this common? It is anything to worry about? I know the Z-bike had a little triangular stand underneath that prevented this (one of the few things Iiked about it).