next scroll to the bottom
foo
bar
baz
many
many
many
many
many
many
many
many
many
many
many
many
many
items
so
we
sure
get
a
scroll
bar
...
now drag this to the sortable above but move the mouse to the right outside of the iframe
this will cause jQuery UI to scroll horizontally,
even though I limited the axis to y
you might need some frantic mouse movements
in our production code it is somehow easier to trigger the bug
show right
<- first show the sortable at the left
show left