这是被别人无意拉进去的,还是出现 Bug 了?
https://i.loli.net/2018/07/03/5b3ae06737868.png
https://i.loli.net/2018/07/03/5b3ae06725541.png
https://i.loli.net/2018/07/03/5b3ae06737653.png