Tested on: - Windows XP SP3 - Apple Safari for Windows 3.1.2 using a WebKit nightly build for Windows from http://nightly.webkit.org/ - Intel P4 2.4 GHz CPU (single core) - javascript is enabled How often it happens: most of the times Description: When browsing the blog websites from http://blogs.discovermagazine.com/, green solid areas are visible and cover the webpage. When moving the mouse cursor over them or when scrolling the window, the webpage elements start to be visible. Switching to other tabs and then back also bring back those green solid areas. This is something that started happening with recent WebKit nightly builds for Windows, and is present in the latest available at nightly.webkit.org, r38794. The effect is very easy to spot on the Cosmic Variance blog: http://blogs.discovermagazine.com/cosmicvariance/ This is a screenshot of how the effect looks when trying to see the front page of the Cosmic Variance blog: http://www.postimage.org/image.php?v=aV2iOzKA
Seems to no longer happen in r39284.