I have this problem too... in my case (09 jk) i think the problem stems from sliding off the seat when exiting the vehicle (lift and bigger tyres minus side steps = fall out of car gracefully) being that the height adjustment lever sits close to the rim of the seat i tend to ever so slightly nudge it every time i get out.
kinda like the clock on the radio after a while it needs to be adjusted.
have a search on some of the US forums, i remember a post where one of the tricks was to take the lever off and reposition it further down at more of an angle although being a '13 i have no idea if this works for ur interior. some of the guys were just taking the lever off altogether. I just live with it... its a jeep thing
hope that helps and if you find a good solution let me know...