Problem when using it within a bootstrap modal

[IbrainMejias]

html

Zona  

js
var options = {
data: ["Cyclops", "Storm", "Mystique", "Wolverine", "Professor X", "Magneto"],
};

document.addEventListener('DOMContentLoaded',function()
{
if(document.querySelector('#txtZona')){
$("#txtZona").easyAutocomplete(options);
}
})

[IbrainMejias]

class="easy-autocomplete" style="width: 0px;"

pierde el valor width