VoiceOver with Swift Charts summaries

I had a VoiceOver user point out an issue with my app that I’ve definitely known about but have never been able to fix. I thought that I had filed feedback for it but it looks like I didn’t.

Before I do I’m hoping someone has some insight. With Swift Charts when I tap part of a chart it summarizes the three hours and then you can swipe vertically to hear it read out details of each hour. For example, the Y-Axis is the amount of precipitation for the hour and the X-Axis is the hours of the day. The units aren't being read in the summary but they are for individual hours when you vertical swipe.

The summary says something such as "varies between 0.012 and 0.082". In the AXChartDescriptor I’ve tried everything I can think of, including adding a label to the Y axis in the DataPoint but nothing seems to work in getting that summary to include units. With a vertical swipe it seems to just be using my accessibility label and value (like I would expect).

VoiceOver with Swift Charts summaries
 
 
Q