EasyEdward: and this is a new thing?
For me yes. I just started to receive invites again but now with certain friends, this happens.
Not sure which I like better.
After sending messages to the invitees, I'm told that it is wgt's doing. So I'll move on.
EasyEdward: Heck I get invites after the person invited me gives up and tries to invite someone else - just about 15 mins after they tried to invite me and they are already playing I get the invite.
This is nothing like the problem I posted. Your's is like the not receiving invites we all have been experiencing. Where as I do get the invite and it is cancelled when I accept. Sorry if you do not see that difference.