Flash 5/Win Bug?
Well, it certainly looks like one. And I haven’t found anyone else documenting it, so I thought I might. You’ll have to click the thumbnail above to notice. I’ve added some red lines to point out the glitch, as it’s not obvious in a still. Compare both pictures at the line. What you’ll notice is that the image, from the rightmost red line leftward, gets shifted about one pixel, just enough to make it seem to jog to the left. What causes it? Moving the alpha setting from 99 per cent to 100 per cent! You can really notice it in the yellow shirted kid’s head and the arm of the kid in the top-left corner. It doesn’t happen on every image, but I have found it on more than one.