I've had that realisation today that I just can't see something without attempting to test it.
A friend of mine updated a Facebook group he set up to use the new format, with the words ' '. This was a red rag to me, so immediately I had to see if I could find this other shoe.
He uses a link from his website to the group and it works fine, if you are already logged into Facebook. If not, you receive a page that says 'Sorry, something went wrong. We're working on getting this fixed as soon as we can.' I'd expect you to be sent to the login page and then when you login successfully it forwards you to the group page. Turns out it was a problem with the link, which has now been fixed.
The point is to show that I just can't resist testing. Pity me.