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    <li>Open the Browser Javascript console</li>
    <li>Just click on the input below, then press "down arrow" key, then "esc" key</li> 
    <li>Repeat previous step a bunch of times, you will see the delay increasing before suggestion list is displayed<br/>
      (after <b>30 openings</b> on Chrome it takes about <b>500ms</b> to be displayed)</li>
    <li><input id="autocomplete-test" type="text"/></li>

  <b>Workaround</b> from jquery ui <a href="">ticket 10050:</a><pre>
    search: function(e,ui) {
      $(this).data('ui-autocomplete').menu.bindings = $();




                $(() => {
  let sourceCall = 0;
  let sourceItems = [];
  for(let i = 0; i < 50; i++) {
    sourceItems.push({label: `Item ${i}`, value: i});

    delay: 0,
    minLength: 0,
    source: (request, response) => {
      console.time(`source call ${sourceCall}`);
      console.timeEnd(`source call ${sourceCall}`);