Artifact on stacked straight area with null values

[PierrickP]

Codepen

https://codepen.io/PierrickP/pen/WNNXMBW

The green serie

[
        [1, 2],
        [2, 3],
        [3, null],
        [4, null],
        [5, null]
]

Explanation

• What is the behavior you expect?
  The green triangle on 4 should not be there

• What is happening instead?
  An artifact

• What error message are you getting?
  No message

[junedchhipa]

Thanks for reporting, fixed it.