This is something that's been happening when I use Graphics Gale, and it's really annoying. When I copy and paste something I've selected with the lasso tool, the area outside the selection, instead of staying transparent, turns into a solid color... It seems to happen regardless of the color depth I use, the transparent color I've selected, or the layer I'm working on. It makes the lasso completely useless, and the same thing happens when I use the circular selection, or shift-click for multiple rectangles...
Is this a bug, or am I doing something wrong?