When doing /setblock with a vine no vines are rendered but you can still climb them
Summoned vines turn invisible, but still allow you to climb on them.
Using /setblock to change a block to a vine does not show the vine
Vines placed without a support block using /setblock cannot be interacted with
Summoning Glow Lichen using /setblock doesn't place any lichen but creates light until the block is updated
Endermen don't render vines when held anymore