No, but I’ve had similar issues on other sites. A couple of other people have mentioned similar issues though, and I think graham said they’re looking into it.
It can often be because some kind of privacy / ad-blocking extension is interfering, so it might be worth trying it with extensions disabled - if only to rule that out.
(try opening a Private Window, assuming you haven’t enabled extensions in private mode)
Try opening the Developer Console (Crtl-shift-J i think) and look for red error messages. (You might see something like a red circle with a number in it. Click that).