0👍
So the error was the y-axis starting from the lowest data point in the dataset. This makes the bar invisible, though it is possible to hover.
By setting:
ticks: {
beginAtZero: true
}
in the yAxis scale i can overcome this. It is also possible to set the minBarLength
on the yAxis the datapoints is attached to (to avoid 0 values not displaying)
Source:stackexchange.com