Waterfall Bug for Iphone 4

The game is running just fine, I just cant see the waterfalls and I just bought the game playing with my brother its kind of pissing me off because he can play and see the waterfall on is iphone 4 the same as my iphone and I cannot see the waterfalls on my iphone and i got a Iphone 4 too.

Well maybe just a patch to fix this issues could be nice since my brother see the waterfall and not me, weird, everything is running fine in the game except that detail. I can see the top of the water and the bottom but can see the waterfall inself

Thank you