After finishing a few islands all of the sudden the graphic disappears whilst in the middle of completing an island. Once this happens the game needs to be stopped and restarted. Most of the time happens again, but once in a while Im able to complete the island. This type of corruption is also happening for TTG.
I look forward to this problem been resolved as I had recommended the game to some friends and they advise me of this problem. I tried myself to confirm and it is happening.