OperaPrestoDriver is a vendor-supported WebDriver implementation that enables programmatic automation of Presto-based Opera products (i.e. v12 and older).
If a div is the very first element in the body of a page, then mouseout events won't be generated if the mouse moves to the body.
If event handlers are registered on the topmost div for mouseout and mouseover events, moving the mouse results in a mouseover event firing, but no mouseout. In ChromeDriver, moving the mouse to the body generates the mouseout event anyway.
If a div is the very first element in the body of a page, then mouseout events won't be generated if the mouse moves to the body. If event handlers are registered on the topmost div for mouseout and mouseover events, moving the mouse results in a mouseover event firing, but no mouseout. In ChromeDriver, moving the mouse to the body generates the mouseout event anyway.