Dense smart cables render as a junction in a few situations that they should not.

Describe the bug

As shown on the image above, I have 3 strait lines using a mix of covered dense and smart dense cables.
In all 3 cases there are no cables behind, just the strait line.
Order of cables in each line:

1. covered, smart, smart, covered
2. covered, smart, covered, controller
3. covered, covered, smart, controller

Only second case renders correctly,
If a smart cable touches another smart cable it renders as junction.
If a smart cable touches controller it renders as junction.

Expected behavior
All 3 cases should render without junctions.

Environment

• Minecraft Version: 1.12.2 SP
• AE2 Version: rv6-stable-6
• Forge Version: 14.23.5.2838
• Modpack: Omnifactory 1.2.1 with channels enabled as only config change

The actual bug is rendering a smart connection towards the dense covered cable, this should be a covered one. As well as rendering the dense smart between two covered ones as cable core.

We did change the cable rendering to always render a core when changing the type with downgrading the connection between both to the lower one. E.g. connection between a smart cable and covered cable will be rendered as completely covered and not one half smart and the other one covered.