I have exactly this same problem too!
When I received invitations to join a new country club, I clicked 'Decline' as normally and it was done but since 4 or 5 days now, a wgt friend sent me an invitation and when i want to decline it, i am logged out! so i re: sign in, re: decline and always logged out.
I can stay like this but that's start to be annoying to have this orange box and to be in unable to clean this.
I am already in a good CC and i don't want to accept and to decline this new CC invite, the risk of starting from 0 in returning back to my CC.
If an admin can fix this, it will really cool :)