Argument repeatedly appended to URL on glossary views content panes

Hi,

I'm having an issue with a glossary style view displayed in a panels page via a content pane. Whenever you click on one of the letters from the summary attachment, that letter gets appended to the current URL (without removing the current argument). So if you click on 'C' three times, the current URL will end in /c/c/c. Obviously only the first argument actually filters anything.

I can get around the problem by overriding the path from the pane configuration, but that's a recipe for the paths getting out of sync with one another! Alternatively (this is what I'm doing on my current project) I can set the override path from within a hook_views_pre_build() and that works fine as well.

Repro

1. Enable default glossary view.
2. Add a content pane, and ensure that the summary attachment is attached to it. Configure it to inherit the Panels path.
3. Create a panels page and add the content pane.
4. Visit the page and click on the glossary links a few times.

The code in question seems to be

  else if ($path = $view->display_handler->get_option('inherit_panels_path')) {
    $view->override_path = $_GET['q'];
  }

from views_panes.inc.

Thanks