I tried to solve the problem a different view. (Non-tree components)
Interestingly, the data grid appears on desktop, tablet and phone but did not.


<div title="Címrendezés" style="padding:0px">
<table id="dgML_sort"
data-options="singleSelect:true,border:false,fit:true,fitColumns:true, scrollbarSize: 0,
onClickRow: onClickRow,
onAfterEdit: function(index,row,changes){
save_address_sort(index,row,changes) }
">
</table>
</div>
<meta charset="UTF-8">
<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes"/>
<meta name="apple-mobile-web-app-status-bar-style" content="black"/>
<meta http-equiv="expires" content="0">
<title>WebWalker</title>
<link rel="stylesheet" type="text/css" href="./jqe/themes/default/easyui.css">
<link rel="stylesheet" type="text/css" href="./jqe/themes/mobile.css">
<link rel="stylesheet" type="text/css" href="./jqe/themes/icon.css">
<script type="text/javascript" src="./jqe/jquery.min.js"></script>
<!-- <script type="text/javascript" src="./jqe/jquery-1.6.min.js"></script> -->
<script type="text/javascript" src="./jqe/jquery.easyui.min.js"></script>
<script type="text/javascript" src="./jqe/jquery.easyui.mobile.js"></script>
<script type="text/javascript" src="./jwebwalker2.1.js"></script>
<script type="text/javascript" src="./jqe/jq-signature.min.js"></script>
<script>