> Your composition and result does make sense while it's running, and is what I 
> would expect.

*phew* glad that went well, because ...

> I guess what is still "weird" to me, is how I can coax 2 rendered objects out 
> of this setup at two iterations, but only if I manually commit, and choose 
> one iteration first. In your composition, if I stop it at two iterations, the 
> placement of the iterations shifts from bottom, and top right corner, to both 
> at top after a few seconds. Everything considered, I can't understand why the 
> state of the composition would shift like that, when all value are consistent.

... this sounds like a bug.

> So, I do understand what you are conveying about this generally being 
> not_a_good_idea, and the reasons why. However, the random shifting (in render 
> count or placement) still seems flaky even considering your points, and like 
> placement/rendering should lock in one way or another (thankfully, I've not 
> been bitten by thinking this worked predictably).

Can you make a simplified example (this is already pretty simple, so feel free 
to reuse it), and provide some easy-to-follow instructions with screenshots at 
each step (shots of the viewer's output, not the editor ;)?  I ask because 
there are some subtle bugs on 10.6 with iterators and changing counts that 
might be causing the strangeness you're observing.  If it's what I think it is, 
there's already a radar tracking it, but I want to see what you're seeing just 
to make sure they're the same problem.  (Additionally, testing it on 10.5 might 
be interesting, to see if it's a 10.6 regression)

(you can PM me those steps+pics if you'd like, since they'll likely be largish 
and the list might frown upon that) 
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