We’re investigating the best way to handle this, but in the meantime it’s possible to open the pop-up from the browser’s pop-up warning. Chrome’s is non-obvious so here’s a screenshot of what it looks like http://screencast.com/t/XvSIYhomQ After a second or so it will minimize to just the icon. Clicking on either the banner or the icon after that happens will allow you to open the pop-up.
(This is likely happening in other browsers as well).
We’re holding off on making any changes to this for the time being. If you run into a lot of trouble with this please let us know, though.