The Ribbon Chart has no Y axis formatting option. So the only way to turn off the Y Axis Title is to convert it to a column chart, turn off the Y axis label and then change back to a Ribbon Chart ...
wynhopkins
Most Valuable Professional
6 years agoHi v-chuncz-msft , seems much more like a bug than a feature reqeust.
If you can't control the Y axis then a Y-Axis Title should not appear