In a bubble chart where points have different sizes, the size in the legend should be consistent

[daattali]

The following line works nicely

plot_ly(iris, x = ~Sepal.Length, y = ~Sepal.Width, color = ~factor(Species), size = ~Petal.Length)

However, the following code results in the legend sizes being weird huge markers, and it's a reason enough to just suppress the legend altogether

myiris <- iris[!duplicated(iris$Species), ]
plot_ly(myiris, x = ~Sepal.Length, y = ~Sepal.Width, color = ~factor(Species), size = ~Petal.Length)

@cpsievert told me previously on Twitter that this might be a plotly.js bug. I don't know how to translate this into a JS issue, so if it's indeed a plotly.js bug could you please open the corresponding issue on their repo?

Potentially related to #705

[cpsievert]

Pretty sure this was fixed in b48d360