复现方法：聚焦代码片段首页的 textarea，然后点击输入框以外的空白处。若键盘自动收起，则证明存在 textarea 中 hold-keyboard 属性不生效的 bug。

复现机型：

System: Android 10, WeChat 7.0.19.1760

Network: 4g

UA: Mozilla/5.0 (Linux; Android 10; PDNM00 Build/QKQ1.200216.002; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/78.0.3904.62 XWEB/2691 MMWEBSDK/200901 Mobile Safari/537.36 MMWEBID/2701 MicroMessenger/7.0.19.1760(0x2700133F) Process/appbrand0 WeChat/arm64 NetType/4G Language/zh_CN ABI/arm64

WeChatLib: 2.13.1 (2020.9.28 19:58:13)