In the previously generated worlds of version 1.16.55 the "Twisting Vines" do not appear since in version 1.16.55 they were not available, when updating the game to 1.16.57 the "Twisting Vines" were not added to forests already generated. It's a real bother not to have that "Item" it would be a good idea to have the "Twisted Vines" appear with "Bone Dust on the Blue Lawn, or to be implemented on the ground in the final version.