Primed TNT can appear to move into or through blocks

The Bug:

Primed TNT pushed by water can visually pass through blocks.

Steps to Reproduce:

1. Build the setup as shown in the provided attachment. setup.png
2. Place a redstone block on top of the diamond block to activate the TNT.
3. Quickly replace the redstone block with a water bucket and watch the TNT closely as it is pushed by the water. 

Observed Behavior:

Primed TNT can visually pass through blocks.

Expected Behavior:

Primed TNT would not be able to visually pass through blocks.