Yes, same thing happened to my character Majesty.
Apparently, Ficho Caverns isn't loadable and you can't even be sent back to the previous map ... or else, you'll get stuck with endless loading for both clients.
I'm guessing that the map is having issues in FH+. Trying to load again in FH will cause that game to load a map that does not even exist too since the servers used are the same.
Perhaps it would be better to avoid this from happening by making it that if a map fails to load, it'll send your character back to their previous map.
Or I could be wrong ... I don't know, it's bothersome. I had to recreate my locked characters.