Firefox fails to switch out of iframe

[iam-mholle]

We have discovered that when switching into an iframe using Firefox, the scope gets set to the iframe scope and does not switch back (like it does in e.g. Chrome) when trying to select elements in the outer scope. They can't be found.

Some digging revealed that Firefox Marionette does not switch back to the DefaultContent when switching out of an iframe using SwitchTo().Window(...). This issue is known to Mozilla and a bug report can be found here. Since it appears like it will not be fixed by Mozilla in the near future, have you considered adding a fix to your library?

It would seem that the issue could be fixed by changing SeleniumWindowManager.SwitchToWindow(...) to the following:

public void SwitchToWindow(string windowName)
{
    if (LastKnownWindowHandle != windowName || SwitchedToAFrame)
    {
        _webDriver.SwitchTo()
                  .Window(windowName);

        // Fix for https://bugzilla.mozilla.org/show_bug.cgi?id=1305822 
        if (_webDriver is FirefoxDriver)
        {
            _webDriver.SwitchTo()
                      .DefaultContent();
        }

        LastKnownWindowHandle = windowName;
    }

    _switchedToFrame = null;
    _switchedToFrameElement = null;
}

This would make sure that the context resets to the DefaultContent like it should do, according to the W3C WebDriver specification, and does not have any side effects.

[obstar]

I will take a look, thanks.

[iam-mholle]

This also affects FrameFinder.FrameContentsMatch(...), and could be fixed the same way:

private bool FrameContentsMatch(IWebElement e,
                                string locator,
                                Options options)
{
    var currentHandle = _selenium.CurrentWindowHandle;
    try
    {
        var frame = _seleniumWindowManager.SwitchToFrame(e);
        return
            frame.Title == locator ||
            frame.FindElements(By.XPath($".//h1[{_xPath.IsText(locator, options)}]"))
                 .Any();
    }
    finally
    {
        _selenium.SwitchTo()
                 .Window(currentHandle);

        // Fix for https://bugzilla.mozilla.org/show_bug.cgi?id=1305822 
        if (_selenium is FirefoxDriver)
        {
            _selenium.SwitchTo()
                     .DefaultContent();
        }
    }
}

[iam-mholle]

Hi @obstar,
just wondering if there are any updates on this issue?