weird zsh problem with background procs and scripts

[Tyler Spivey <tspivey@xxxxxxxxxx>]

If you put the following into a loop it won't work. Is there a
workaround?

#!/bin/zsh
while :;do
ed &
jobs
sleep 1
done

this should launch a bunch of eds int he background, but only seems to
load one.
zsh -x shows that it's not even taking the &.