Why does the number of mouse scroll lines get lost?

Question

Mouse

Very often this parameter goes astray (switches to "1"), what could be the reason for this? You have to go into the settings and manually return the original value. I don’t use the touchpad on a laptop, the mouse is already the fourth or fifth - all the same, the problem slips. Although, I can’t even understand how this can be connected with her, because. it does not have any buttons for setting the number of lines.