Issue description:

Cable with covers is not looking like the block the cover is made from on the surface facing north.

What happens:

Face of block that is facing north direction doesn't render correctly.

What you expected to happen:

The face tha tis facing north to render normally like the other faces for south etc.

Steps to reproduce:

1. Cable going up coverd with covers.
2. Look at the north face.

Version (make sure you are on the latest version before reporting):

• Minecraft: 1.12.2
• Forge: 14.23.4.2759
• Refined Storage: 1.6.5

Does this issue occur on a server? [yes/no]
Yes.

Here is a screenshot of the rendering problem:
https://www.dropbox.com/s/46hujnls0rxdxvo/2018-09-22_05.50.04.png

I don't understand your screenshot.

With what blocks can I reproduce this, and can you reproduce it with vanilla block covers?