Fix `display: none` when it is set for the only node in the hierarchy (#377)
1<!DOCTYPE html>
2<html lang="en">
3<head>
4 <script src="../scripts/gentest/test_helper.js"></script>
5 <link rel="stylesheet" type="text/css" href="../scripts/gentest/test_base_style.css">
6 <title>
7 Test description
8 </title>
9<head/>
10<body>
11
12<div id="test-root" style="width: 100px; height: 100px; display: none"></div>
13
14</body>
15</html>