Nether portal spawns in nether incorrect regarding chunks

When you create nether portal in overworld it spawns in nether incorrect regarding chunks, the position of the portal in the chunk does not match in two dimensions. 

What I expected to happen was...:
The position of the nether portal in the chunk must match in two dimensions.

What actually happened was...:
The position of the nether portal in the chunk does not match in two dimensions.

Steps to Reproduce:
1. Press F3+G
2. Build nether portal in overworld
3. Enter the portal

4. See portal position in chunk