Have a smitty on my YJ and a warn on the JT. There is no comparison to the 2, the warn is just so much better in all aspects.
Keep in mind my comparison is between the gen 2 smitty and the 12-s platinum
That being said, my smitty has never failed me.
Very common on jeeps, same issue on our Cherokee TH. Take it in and it will either require a flash or a new shifter harness. Would think they would have solved this by now