You can see through blocks when using widescreen resolutions

The Bug:

You can see through blocks when using widescreen resolutions.

Steps to Reproduce:

1. Summon a solid wall of blocks nearby by using the command provided below.

   /fill ~6 ~ ~6 ~6 ~4 ~-6 minecraft:stone

2. Stand up against the wall and alter the size of your game window so that you have a large widescreen resolution.
3. Look closely at the solid wall you're standing against.
4. Take note as to whether or not you can see through blocks when using widescreen resolutions.

Observed Behavior:

You can see through blocks when using widescreen resolutions.

Expected Behavior:

You would not be able to see through blocks when using widescreen resolutions.