Hi TheDukeUK,
I can’t test it as I do not have a FB account.
Just a couple of suggestions to try.
Try disabling 'Do not allow websites to know where you came from (suppress HTTP Referrer header)’ found under privacy in the advanced settings.
Try disabling the PrivDog extension or any other 3rd party blocking/filtering extensions.
Wow thank you thank you … disabling PrivDog has also fixed Scrabble which I have not been able to play with Dragon for weeks. Zoo World is fixed by disabling ProvDog as is Gardens of Time.
Thanks Chiron and thanks TheDukeUK for creating the bug report. :-TU
If you would like to continue using PrivDog until the issue is rectified, you could add the troublesome sites to PrivDogs exception list found under PrivDogs options.
You and your friends are welcome TheDukeUK and thanks for posting back.