We definitely agree this is annoying. What you experienced is not the goal or intention. It actually solves a technical problem but has this undesirable side effect. Some websites have JS to force break-out of an iframe, if the site is loaded in one. Since the iframe is core to the selection process, we added this to prevent the automatic break-out. Unfortunately, it applies to everything including trying to close the browser. We'll figure out a better solution eventually, but we don't want anyone to think that this was added to increase conversions or anything in that nature.