Problem when placeholder option does not exist.

[jorix]

When there is no placeholder option, when clicking on the control, the list appears and disappears immediately.

On the other hand clicking '.selectivity-caret' it works well.

When the focus is already in control, there is no problem either.

e.g.

$('#ex-1').selectivity({
  items: [{id:'1', text:'Amsterdam'}, {id:2, text:'Antwerp'}]
});

No problem using multiple:true or inputType:'Email' or ajax

Using: selectivity v3.1.0 + jQuery v3.3.1