Object initializers in using-block generates code analysis warning CA2000

If I use object initializers in using-block I get Code Analysis warning about not disposing the object properly:

CA2000 : Microsoft.Reliability : In method 'ReCaptcha.CreateReCaptcha(this HtmlHelper, string, string)', object '<>g__initLocal0' is not disposed along all exception paths. Call System.IDisposable.Dispose on object '<>g__initLocal0' before all references to it are out of scope.

Here is the code:

    using (var control = new ReCaptchaControl()
    {
        ID = id,
        Theme = theme,
        SkipRecaptcha = false
    })
    {
        // Do something here
    }

If I do not use object initializers, Code Analysis is happy:

    using (var control = new ReCaptchaControl())
    {
        control.ID = id;
        control.Theme = theme;
        control.SkipRecaptcha = false; 

        // Do something here
    }

What is the difference between those two code blocks? I thought that they would result in same IL. Or is this a bug in the code analysis engine?