Your actual firmware version (20180105) unfortunately carries a known bug (background task clear bug) wich makes also notifications not showing properly. Updating your device to the latest firmware will solve the issue. If you can't update it, a palliative solution would be going to settings -> &qu...

Thank you for all the answers.


I did not install the antivirus at first ...... wipe cash and factory data ... then it is not working .... the new FW is not ... do not ... would have to wait OTA alone. ..... When there is no app to notify tarkbar, some app does not work.

No notifications on the app's taskbar when the screen is closed at all. Yes FW 20170803_20180105-1104 I need to fix it.