在线人数显示有误 || The number of people online is incorrectly displayed #302
Description
如图，这里的人数有一半实际上是不在线的，调查了发现是设备未关机未断开浏览器会话，虽然不在前台，甚至浏览器没运行，却也显示在线
As shown in the picture, half of the people here are actually not online. After investigation, it was found that the device was not shut down and the browser session was not disconnected. Although they were not in the foreground and the browser was not even running, it still showed that they were online.