I'm using the accessibility module for HighCharts and looking to add plot bands to my chart.
However, when investigating the accessibility tree for the resulting chart, I can't find any mention fo the plot bands or the plot band label in it. When looking at the DOM/SVG of the chart, all of the plotband info is wrapped in `aria-hidden=true`.
Am I missing something? Is there any way to denote to a screen reader that there is a plot band and what the label is?
Here is a mockup, I was just using the Accessibility tab in Chrome Dev Tools: https://jsfiddle.net/ybch21xk/