Sortable's Opacity API Description Is Misleading

[jtfairbank]

opacity only gets applied if helper is set to "clone" or a function. It does not seem to get set if helper is left as its default "original". I haven't tested what happens if you set it explicitly to "original".

It'd be good to add this to the opacity option's api documentation, so that people know to set helper to "clone".

[scottgonzalez]

I'm not sure how you got this impression, but the opacity is applied regardless of what helper is used (even for helper: "original").