Normally a series would include the same categories, but each stacked column in this example is made up of different brands. This means the settings won't work as each row and column does include data at some point. This is in turn causing issues with the hover text.

Ideally, this wouldn’t be an issue. Otherwise, an option should be added to allow for showing only the hover text of the closest item:

{noformat}require(plotly)

viz$htmlwidget <- layout(viz$htmlwidget, hovermode = "closest")

viz{noformat}