Hi MrRon, as far as I'm aware Recuva doesn't has "Smooth Scroll" so I assume you mean Internet Explorer?? in any case enabled or disabled this has no effect.
When accessing the scrollbar by clicking and dragging the offset pointer the lines separating the filenames are correctly spaced out.
However if I click line up / down via the squares at either end of the scrollbar the display is messed up as shown in the photo.
When I click down one line at a time Recuva prints lines going through text, if I click up Recuva doesn't print any lines at all.
I've not changed my system fonts or DPI settings so this one is a bit of a mystery to me.
XP SP3: If I use the mouse or the arrow keys to scroll through list it's OK, but the effect manifests itself as soon as I use the vertical scroll arrows.
Scrolling down with them gives the effect in Richards screenshot. Scrolling up does the opposite. It creates gaps.
I also have smooth scrolling disabled in Internet Options.