Scan option bug

Bug (check the screenshot)
New scan options. :o

I don’t have that here…

I suggest your try a repair and/or a clean install of Avast:

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

A problem on one computer isn’t really a bug. As you can tell from your other post,
it isn’t something everyone has.

Have not got it that way on my pc either – Toshiba laptop with Win 10 Home 64
It may have something to do with if you have the Browser Protection installed.
I do not on my computer.