Layout problems with directed graph containing many disconnected components

I'm attaching some files that show the result of rendering with GraphPlot (gets it wrong) and with TikzGraph (gets it right).

The data are here: https://drive.google.com/file/d/12CfjV7kv2r7EAmSQoudfMog7p9r-OAr1/view?usp=sharing

Save that to /tmp/backedges.jld2 or something similar. Then you can create the graph with

julia> using FileIO

julia> backedges = load("/tmp/backedges.jld2", "backedges");

julia> using LightGraphs

julia> g = SimpleDiGraph(length(backedges))
{652, 0} directed simple Int64 graph

julia> for (i, deps) in enumerate(backedges)
           for src in deps
               add_edge!(g, src, i)
           end
       end

and then plot g.

backedges.pdf
backedges2.pdf

With GraphPlot you can see the edges don't connect to nodes on both ends.

Download the supplied data to /tmp/backedges.jld2, recreate the 652-node SimpleDiGraph with the Julia and LightGraphs commands in the issue, and plot it with GraphPlot. Compare the result with backedges.pdf and backedges2.pdf, then trace GraphPlot's layout and edge-rendering entry points to determine why edges miss nodes in graphs with many disconnected components; done means the reproduced graph connects edges at both ends.