Testing Line Breaks in Japanese

HTML

<!DOCTYPE html>
<html lang="ja">
<head>
  <meta charset="UTF-8">
  <title>Testing Line Breakks in Japanese</title>
</head>
<body>
  <div>
    デバイス<wbr>設定方法
  </div>
  <div>
    デバイス&#8203;設定方法
  </div>
  <div>
    aaaaaa<wbr>bbbbbb
  </div>
</body>
</html>

CSS

div {
  font-size: 2rem;
  width: 12rem;
  border: 1px solid;
}