Reported in Chromes Help Forum (in Japanese) http://www.google.com/support/forum/p/chrome/thread?tid=611fa72577a994db&hl=ja ENVIRONMENT: Safari 5.1 (6534.50) on Snow Leopard Chrome 15.0.872.0 on Snow Leopard STEPS: 1. Open http://jsfiddle.net/jsv9X/ 2. Move the mouse pointer onto the green box -> The box shrinks. 3. Move the mouse pointer out of the green box EXPECTED: The document has only the green box. ACTUAL: The document contains the green box and a red box.
Looks similar to 71541, but definitely not about redundant scroll bars. Also changing the platform to All from MAC 0S X.
I am able to reproduce this in WebKit ToT (261814@main) and it still has “red” when mouse is moved out.