I accidently placed a reapeater in the wrong direcection and this weird texture showed up and supprized me. I tyed again and the photo shows what happened. PS i was using a texture pack, Faithful x32.

How to Reproduce

1. Have some repeaters like in the photo

2. put a reapeter in the wrong way

3.put a redstone current though the reapetters
that should do it.

Sincerly, KLM (sorry 4 my spelling)