Scrolling doesn't work anymore
Whatever page I visit using Vivaldi, my scroll wheel doesn't work and the following icon is constantly displayed next to my cursor:
What is supposed to be it's function and how do I get rid of this?
That is not a standard Windows icon for scroll wheel cursor.
You should look in you special mouse software you are using to disable special settings for the mouse wheel.
You may have also installed some app or extension for mouse control that is not native to Windows.