Legendary transmutation (other concerns)
ANet said they wanted transmuted weapons to retain the quality of the higher weapon used in transmutation, so even if it isn’t so now (i heard only the color is that of the higher item, but not the item), despite it being bugged I’m sure they will eventually make it how it needs to be through a patch. However until we actually hear from them officially on this subject I wouldn’t transmute any legendary if I were you.