Flowing Water Visibility Issue

When directing water to flow into a different direction the edge that is created makes everything underwater visable.

Expected Results

Water would appear on a hard edge.

Actual Results

The hard edge created makes the blocks underneath visable.

Steps

1. Create a platform that will cause water to flow in one direction and off of platform. 
2. Place Water
3. Divert water to fill up space
4. Remove diversion blocks to allow water to flow in intended direction