There is already a Bugfix for this Problem released. I changed my Arcade to that Fix and never got this Problem again
Issue is because the Arcade is not sending any Game ID when you save HS. So it doesn`t know either this is Game A or Game B.
I fixed it on my Site and now.....
The Player that has 2 Windows open while playing two Games will get a Message from my Arcade that the Score won`t be saved because he might have opend 2 Windows and this is a Anti-Cheat Protection.
I`m kinda busy today....
Go through my Posts to find the Solution for that.....
Cheers,
Mahoni999