这似乎是一个Chrome错误，但我找不到任何参考。

This seems to be a Chrome bug, but I can't find any reference to it.

当我启动Web检查器似乎消失，所以也许你可以尝试运行一些虚拟的javascript的行为异常的元素（注意：我只是猜到这里）：

It seems to go away when I start the web inspector, so maybe you could try to run some dummy javascript on the element that's misbehaving (Note: I'm just guessing here):

var acc = document.getElementById("accordion");
acc.className = acc.className;

这将强制回流。