无法使用Webdriver在框架上拖放

Question

我无法跨框架将元素（图像）从源拖动到目标。我尝试在Ubuntu，Chrome 41和Windows Chrome 41以及Firefox 36上使用Webdriver（selenium 2.45.0）。两个WebElements都可以独立成功定位，因此它不是定位器问题。我的代码：

    Actions builder = new Actions(driver);
    builder.clickAndHold(recipeImage);
    Action action = builder.build();
    action.perform();

    driver.switchTo().frame(driver.findElement(By.xpath("//iframe[contains(@id,'contentPane_view-')]")));

    builder = new Actions(driver);
    builder.moveToElement(imageField);
    builder.build();
    builder.release(imageField);
    action = builder.build();
    action.perform();