This is just a test ...

... to see whether the bug seen by @batgirl is a fluke or something more persistent.

I guess it worked for you then?

Yes, in did. V3, Safari, on a Mac.

Then it must be me.  I've had things not posting and previewing. Thanks

No, it is a recurrent fluke. Not just you; look at the many unsuccessful attempts at posting something about Fritz interface here: https://www.chess.com/forum/unanswered_posts

testing lets see if I can post here!

No problem for me posting here.  

Works fine here