Plots.jl: PGFPlots legend problem with groupedbar

[SebastianM-C]

PGFPlots does not correctly show the series in the legend with groupedbar from StatPlots.jl. The legend only shows black lines for each series instead of colored rectangles.
Code to reproduce:

using Plots, StatPlots
pgfplots()
groupedbar(rand(10,3), bar_position = :stack)

Output:

[mkborregaard]

It appears pgfplots can do this (from the pgfplots manual)

[mkborregaard]

Any ideas for how to implement this @pkofod ? :-)

[pkofod]

Ill look later tonight.

[SebastianM-C]

Thank you very much!