Placing a block in a specific direction places it on the opposite side.

If you place a specific block (redstone_repeater, etc).... it will place it in the opposite direction. (placing to the north puts the position to the south)

I noticed this after trying to make something with redstone.

How to reproduce:
1. Try to place a redstone repeater (or any block that can face north,south,east,or west)

2. It will face the opposite direction.