Highcharts - How to remove tooltip arrows

Question

I'm using a custom HTML tooltip with Highcharts and would like to remove the arrow, e.g. see the tiny arrow over the blue bar:

These are my settings for the current tooltip:

    useHTML: true,
    shadow: false,
    borderRadius: 0,
    borderWidth: 0,
    backgroundColor: "rgba(255,255,255,1)",
    style: {
        padding: 0
    },
    shared: true

Answer 1

Use option shape

shape: "square"

Highcharts reference