Crash puting blocks infront of Nether Portal

Crash puting blocks infront of Nether Portal

What I expected to happen was...:
Just put the block normally

What actually happened was...:
The game crashed everytime i try

Steps to Reproduce:
1. I builded a Nether Portal in last version
2. Im building my house now so i gotta fill it with blocks
3. When i put some blocks (wall) infront of the Nether Portal the game crashes. (I even tried puting doors, cristal...etc)