I just played this game for the first time today, and the other person I played with got 2 +1 push tiles, we played as if it was a permanent bonus.
That way seem a little over-powered to me, so I was wondering if it was just a one time bonus. Thanks in advance!
It's a one time bonus. Once you use it, you put the tile back. You're right in that it would be way overpowered if it was a permanent bonus.