问题：开发者工具正常、真机不正常

真机参数：

System: Android 9, WeChat 7.0.18.1740

Network: wifi

UA: Mozilla/5.0 (Linux; Android 9; Redmi Note 5 Build/PKQ1.180904.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 XWEB/1169 MMWEBSDK/200801 Mobile Safari/537.36 MMWEBID/9357 MicroMessenger/7.0.18.1740(0x27001239) Process/appbrand2 WeChat/arm64 NetType/WIFI Language/zh_CN ABI/arm64

WeChatLib: 2.13.0 (2020.9.10 16:07:53)

操作：直接下划到底部

另：此类型真机的下拉刷新也不正常，本想去掉下拉刷新改成双击标题栏，今天发现触底也不正常

https://developers.weixin.qq.com/community/develop/doc/0004c8d9488260c5feea2339e56800