gnu plot integration still (partially) broken on OSX



I use to create 3d-graphics using gnuplot either via draw3d or via plot3d, both commands seem to fail:
1. draw3d shows nothing, it does work on windows.
2. plot3d shows a plot but does not interact with mouse to rotate the view.

Do I miss something?

Hermann

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load("draw")$
A:[2,-2,0]$B:[2,2,0]$
draw3d(vector(A,B))$
plot3d(x*y, [x,-5,5], [y,-5,5], [plot_format,gnuplot])$