uniapp 页面左上角系统自带的返回箭头消失

<navigator url="/pages/downloads/downloads" open-type="reLaunch">

 

downloads.vue页面的左上角返回箭头不显示, 原页面去掉open-type="reLaunch"

 

 <navigator url="/pages/downloads/downloads">

 

OK, 箭头回来了!  

 

P.S: 补充一下: 在pages.json中相应页面的style中还不能有:

"navigationStyle":"custom",  才能显示箭头.