小程序在手机端浏览时，转发出去，是正常的还有显示返回键，但是在PC端浏览时候，点击转发，就出现了返回键和home健重叠了，如图所示
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请具体描述问题出现的流程，并提供能复现问题的简单代码片段（https://developers.weixin.qq.com/miniprogram/dev/devtools/minicode.html）。