Plotly doesn't render geom_dotplot correctly

[pelotom]

ggplot2:

ggplot(mtcars, aes(hp)) + geom_dotplot(binwidth = 10, stackdir = 'center')

plotly:

ggplotly(ggplot(mtcars, aes(hp)) + geom_dotplot(binwidth = 10, stackdir = 'center'))

[cpsievert]

Duplicate of #1213