Hello,
I created a stacked bar chart with 4 data series. When I display the chart I sometimes get floating bars, I disabled two of the data series (since they rarely have data) and the one series still has a floating stacked bar. I attached a screenshot to make the situation more clear. I am not sure why my bars are floating. Note that I also have other bar charts that are created the exact same way but they never have a floating data series.