tl;dr: 清除（Comet）缓存！
<小时>
Long answer:
我只有两个字：
Comet Cache!
Comet缓存已启用
检查源代码后，我看到了这样一个注释</html>:
<!-- *´¨)
¸.•´¸.•*´¨) ¸.•*¨)
(¸.•´ (¸.•` ¤ Comet Cache Notes ¤ ´¨) -->
<!-- Cache File Version Salt: n/a -->
<!-- Cache File URL: http://<my-domain> -->
<!-- Cache File Path: /cache/comet-cache/cache/http/<my-domain>/index.html -->
<!-- Cache File Generated Via: HTTP request -->
<!-- Cache File Generated On: Feb 22nd, 2017 @ 5:37 pm UTC -->
<!-- Cache File Generated In: 4.59149 seconds -->
<!-- Cache File Expires On: Mar 1st, 2017 @ 5:37 pm UTC -->
<!-- Cache File Auto-Rebuild On: Mar 1st, 2017 @ 5:37 pm UTC -->
<!-- *´¨)
¸.•´¸.•*´¨) ¸.•*¨)
(¸.•´ (¸.•` ¤ Comet Cache is Fully Functional ¤ ´¨) -->
<!-- Loaded via Cache On: Feb 22nd, 2017 @ 5:37 pm UTC -->
<!-- Loaded via Cache In: 0.03472 seconds -->
手动删除
/cache/comet-cache/cache/http/<my-domain>/index.html （相对于您的
/wp-content/ 目录）解决了问题。
我觉得自己很愚蠢，因为我假设没有缓存。Always blame the cache!
