My version of Prestashop is 1.6.0.14
I had the same problem, but I've solved replacing in the themes/{your theme}/js/autoload/15-jquery.uniform-modified.js approximately on line 1075, on the end of the file:
$(window).load(function () {
$("select.form-control,input[type=checkbox]:not(.comparator), input[type=radio],input#id_carrier2, input[type=file]").uniform();
});
// refresh uniform selects on document width change
$(window).resize(
function () {
$.uniform.update("select.form-control, input[type=file]");
}
);
For this:
if (typeof isMobile != 'undefined' && !isMobile){
$(window).load(function () {
$("select.form-control,input[type=checkbox]:not(.comparator), input[type=radio],input#id_carrier2, input[type=file]").uniform();
});
// refresh uniform selects on document width change
$(window).resize(
function () {
$.uniform.update("select.form-control, input[type=file]");
}
);
}
Don't forget to back up the file before making any change to it.