Win10 preview version 14271 task bar white box arrow how to do?

Microsoft yesterday pushed Win10 RedStone Preview 14271 to Insider Fast Channel users. Many users found a white box in the taskbar notification area after installing this version. As shown below, this may be Microsoft's intention to do this area. Some adjustments.

According to some user feedback, just set ——system——notifications and actions——select which icons to show off on the taskbar “ notification area always shows all icons & rdquo; can solve this problem, as shown below:

But the strange thing is that in this computer used by Xiaobian, whether this option is turned on or not, this problem does not occur. After testing, if you select “display touch keyboard button in the right-click menu of the taskbar, this problem will not appear, as shown below:

Therefore, if you encounter this problem, there is Two solutions:
1, close & ldquo; notification area always shows all icons & rdquo;;
2, if you want to display all the icons in the notification area, then you have to set the touch keyboard button in the taskbar.