Allow Deselect on Single Selects: Does not work

[sangramfuture]

The default

element.chosen(); // works

But when we add 'allow_single_deselect: true' to permit deselection of single select. it makes no difference.

element.chosen({allow_single_deselect: true}); // does not work

[alvaroffj]

The same thing for me, but the other options works