Yeah that's a bit weird. I'm not sure. Maybe it was a bug some users were getting. Same here too. Been trying for some different things just for variety sake.

Hopefully it stays giving you more than the 1 ticket. I wouldn't spend too much more past that if it doesn't go back. At least until we get a more definitive reason as to why it's not giving you the additional tickets. It would suck if not, but lets hope it continues giving you maximum free plays.