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"the results could not be loaded" error condition doesn't work with timeout #6372

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@aliber4079

Description

@aliber4079

"the results could not be loaded" error condition is correctly generated for errors like 404, 500, but not for timeout condition

Minimal case:

Browse to http://localhost/select.html

Expected: After 1000 ms, "the results could not be loaded" is displayed right below dropdown

Actual: No error is displayed

sleep.php:

<?php
sleep (20);

select.html

<!DOCTYPE html>
<html>
<head>
	<meta charset="UTF-8">
	<link href="select2.css" rel="stylesheet">
</head>
<body>
<select id="dropdown"></select>
<script src="jquery-3.7.1.js"></script>
<script src="select2.full.js"></script>
<script>
$(function(){
	$('#dropdown').select2({
		debug:true,
		ajax: {
			url: '/sleep.php',
			timeout: 1000,
			error: function(a,b,c) {
				console.log("oops");
			},
			data: function (params) {
				return {
					query: params.term
				}
			},
			
		},
		width: "50%"
	})
});
</script>
</body>
</html>

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