mouse roller scrolls windows instead of lines

Submitted by Todd

Assigned to Eric Koegel

Link to original bug (#12516)

Description

xfce 4.10 and 4.12

If you roll the mouse roller too fast, it rotates through your open windows, meaning you wind up on a different program than the one you were trying to scroll through. This is so O-B-N-O-X-I-O-U-S I can begin to describe. Please fix.

Many thanks, -T