The threads were coming apart on my Samsonite Lift Easy piece of luggage. There was no damage.
Just the threads coming loose where the zipper and the fabric meet. I pulled the zipper apart where the threads tangled up in the zipper trying to open the suitcase. Since it was still under warranty, I contacted Samsonite and sent pictures. They said it was caused by mishandling by the airline.
There was NO damage to the zipper or area of the zipper until I forced it open to get my belongings out of the suitcase.
It is OBVIOUSLY the threads coming loose from the fabric. So don’t be swayed by their warranty, they don’t honor it.