Mine did that. They replaced the seat. The second one started to do the same thing. I cut down some jeep grill poly bushings. They're bigger around and been on the seat for about 3 years with no more issues. I had a set of factory ones left over from a body lift i did.
https://www.quadratec.com/p/daystar/1-radiator-support-mounts-97-06-jeep-wrangler-tj