[Description of the issue]
In any of the game's interfaces, it's impossible to scroll up or down with the mouse wheel, if your mouse pointer is over a button. This can be tested in the Load game screen or in the Controls screen.
[DETAILED list of steps to reproduce the issue AND what to look for]
1) Have enough savegames in order for a vertical scrollbar to be present in the Load game screen, or go to the Controls.
2) Hover over a Load or Delete button in the Load game screen, or over the Restore Defaults button in the Controls.
3) Try to scroll the list down or up.
The lists should scroll even when hovering over a button.