Why is the notification of one plus 8T mobile phone application set to the second notification, and the icon will be displayed in the status bar after receiving the notification?

In order to adapt to the latest specification of Google, when the application of the second notification sends the notification message, the application icon will also appear in the status bar.

One plus will add a setting option in the subsequent version update, and the user can select "hide or open the icon of the second notification message".

Please pay attention to the subsequent version update of the desktop.