This is a bit hard to explain, so here's reproduction instructions: 1) Go to a webpage that has a pulldown menu form element somewhere close to the top of the page 2) Use the tab key to select the pulldown menu 3) Use your mouse scroll wheel to scroll down so that the pulldown menu is hidden somewhere outside the visible area of the window 4) Press Spacebar to open the pulldown menu What happens at least on my machine, is: * If the Safari window is on the main screen on your computer (or you have just one screen), the pulldown menu contents appear outside the browser window at the height the menu is scrolled to in the clipped area of the page, or near the border of the screen if the menu is scrolled outside the whole screen * If you have two screens and the browser window is on the secondary screen, the pulldown menu contents appear on the main screen, near the edge of the second screen, at the scroll height described above Reproduce on the Webkit build I downloaded five minutes prior to filing this. I have no idea what the correct behavior would be, but what's happening now doesn't appear correct.
*** This bug has been marked as a duplicate of 9696 ***