Most coil sprung LR products are not balanced side to side and often have differen springs side to side as a result. Lift kits tend not to have handed springs.
Also a LR that starts to lean will get creep in the radius arm bushes which then holds the lean even whenthe cause is removed 9the diver gets out).
Also the torque reaction of the drivtrain exacerbates the lean, as does parking on a hill.