This is a redstone dust bug. This bug is when you place down redstone in a single player world. When you place it down it bugs up and goes the other way.
I thought it would go in the normal direction.
But it actually just faced one way.
Steps to Reproduce:
1. Place 1 redstone dust
2. Place 1 redstone dust next to it. They will then be parallel
Duplicate of MC-14538, please use the search function to see if your bug has already been submitted. Currently over 56% of tickets are being closed as duplicate.