Can't close black box in bottom right of screen during scan

Avast Free Antivirus / Premium Security
1

I don’t know if this is the fault of the new version, but I now cannot close the black notification box in the bottom right corner of the screen. This is bad, because I work online, and it covers part of my screen.

2
This is bad, because I work online, and it covers part of my screen.
Solution, don't scan when working ;D

In case you don’t know, your avast have realtime protection, meaning EVRYTHING that goes on in your computer when on is scanned as it happen

Have you tried avast repair?
Do you have a screenshot of this black box ?

3

Repair Avast:
Control Panel> Program and Features (Add/remove program)>Select Avast> Select Repair. Reboot when completed
https://www.avast.com/faq.php?article=AVKB204
If Repair doesn’t fix the problem, try the following:
Clean Install of Avast:
https://goo.gl/4Ptzkf