nw:weak-component-clusters not following seed?

[piepmachientje]

When I run a netlogo code with nw:weak-component-clusters in it, it returns the components in a different random order each time, even when random-seed is specified. I've tried with netlogo 5.1.0, 6.1.0 and 6.2.2 and two different machines, but the problem persists.

extensions [nw]

to setup
  clear-all
  random-seed 5
  create-turtles 1000
  ask turtles [create-link-with one-of other turtles]
  print (nw:weak-component-clusters)
end

, for example will sometimes print '[(agentset, 2 turtles) (agentset, 15 turtles) (agentset, 59 turtles) (agentset, 4 turtles) (agentset, 920 turtles)]', sometimes '[(agentset, 2 turtles) (agentset, 920 turtles) (agentset, 15 turtles) (agentset, 59 turtles) (agentset, 4 turtles)]', sometimes '[(agentset, 15 turtles) (agentset, 59 turtles) (agentset, 920 turtles) (agentset, 4 turtles) (agentset, 2 turtles)]' etc. Any idea what could be causing this?

[brandesNW]

I have confirmed the bug.
I used the following code and exported world file to show that given the same set of links and turtles and a random seed the weak component clusters differ between runs with a fresh NetLogo session.

extensions [nw]

to import-links
  clear-all
  import-world "links-world.txt"
  random-seed 15
  print (nw:weak-component-clusters)
end

links-world.txt