Support for MultiCheckBox from PlutoUI?

[iabraham]

I am consistently getting buggy behavior when the SliderServer runs a notebook with PlutoUI elements; specifically the MultiCheckBox. The notebook runs fine when Pluto is running it; but shows errors when the SliderServer runs it. Here is a MWE:

using  PlutoUI

begin
    sites = ["France","Germany","Russia","China"]
    groupdict = Dict(zip(sites,[[:blue, :white, :red], 
        [:black, :red, :yellow], [:blue, :red, :white], 
        [:red, :yellow]] ))
end

@bind loc Select(sites)

@bind col MultiCheckBox(groupdict[loc])

Any clue what could be going wrong?