I am having this problem too. Is there a workable solution?

This is the only reason I don't use the play in new window option, I am amazed it's never been pointed out before.

When the game ends it needs to go back to the parent window, but I've never seen a fix for this. It's too unprofessional for me to use otherwise, it looks a mess.

you just close the window after you submite, if you play 30 games do you really want 30 windows open,

but yes it would be good to have, when you click in new window it becomes part of the forum, like a return link back to the main arcade.