One ui 3.1 bugs

[input]

Why this notification type app icon is showing.

[Sk2063]

You can change your this from settings .... You can Change your noti. Type from brief to detailed

[Sidhabhi]

Go to settings>lockscreen>notifications>change notification style

[abhiishekbiju]

If it doesn't get removed after a restart, try backing up your device and resetting it.(remember to backup tho)