[User Account]When selected a picture, the right border of the user icon disppeared.

[Machine]
Dell Vostro 3900
  [Version]
18.04 daily 20180412 +
kylin-video_1.1.6-0ubuntu2、
youker-assistant_3.0.4、
Ukui-control-center_1.1.2-0ubuntu1

  [Details]
[User Account]When selected a picture, the right border of the user icon disppeared.
【新增用户】创建用户，设置头像时，选择一个图片，此时头像右边边框消失

  [Test Case]
1. Open Start Menu-Settings-User Account
2. Click Create a new account
3. Click select picture and check the right border
Expected Result:Passed
Actual Result:disppeared