Android上的Chrome 55.0.2883.91是否正确缩放固定元素？

我不确定，但我认为Chrome for Andoird开始在固定元素上缩放，而这些元素在缩放时不再破坏页面/布局

请在运行最新Chrome for Android（在移动设备上）的本地开发环境中检查此简单设置

当我缩放包含此元标记的页面时

<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=yes">

<div class="fixed-placeholder">
  <div class="site-header">
        Site Header
  </div>
  <div class="menu-icon">
        Menu
  </div>
</div>
<div class="content">
    Content
</div>
<div class="content">
    Content
</div>
<div class="content">
    Content
</div>
<div class="content">
    Content
</div>

.fixed-placeholder {
    height: 6em;
    display: block;
}
.site-header {
    position: fixed;
    height: 3em; /* same as fixed-placeholder to avoid page jump or content moving under the fixed element */
    top: 0;
    left: 0;
    width: 60%;
    background-color: #ccc;
    font-size: 2rem;
    /*width: 80vw;*/
    /*display: none;*/
}
.menu-icon {
    position: fixed;
    height: 3em;
    top: 0;
    right: 0;
    border: 1px solid black;
    width: 40%;
    font-size: 2rem;
    /*width: 20vw;*/
}
.content {
    height: 500px;
    border: 1px solid green;
}