ELK self reference arrow disappeared

[alixander]

direction: right

Turnstile: {
  l: Locked {
    shape: circle
    style.fill: "#fd7373"
  }
  u: Unlocked {
    shape: circle
    style.fill: "#59c061"
  }
  
  l -> l: push
  u -> l: push

  l -> u: coin
  u -> u: coin
}

Before (WIP)

After

Originally posted by @pleshevskiy in https://github.com/terrastruct/d2/issues/273#issuecomment-1336245945