tabBar 去掉文字后 在模拟器上 y轴是居中的，真机上没有垂直居中
- 当前 Bug 的表现（可附上截图） [图片] - 预期表现 [图片] 代码片段 "tabBar": { "selectedColor": "#8eb6cf", "list": [ { "pagePath": "pages/index/index", "iconPath": "/images/home.png", "selectedIconPath": "/images/home@.png", "text": "" }, { "pagePath": "pages/cart/cart", "iconPath": "/images/cart.png", "selectedIconPath": "/images/cart@.png", "text": "" }, { "pagePath": "pages/user/user", "iconPath": "/images/me.png", "selectedIconPath": "/images/me@.png", "text": "" } ] }
