Not sure if bug or just not implemented, however i use the Split alot and Trim alot. However using split there isnt a symmetry function. So if i want to slice a part off, i have to split one side ( ex: cutting off a detail to work seperately), then delete the opposite side and mirror it after the fact to get a duplicate across to the symmetry plane, now i can continue sculpting with the new split part. Trim seems to have the function ( Symmetry), but Split is missing it. Possible bug? or maybe a reason why it doesnt have that option? ( possibly more complicated as it creates a new mesh rather than remove from existing?). thanks!.