Program: 169443
Project: 169443
Buggy source:
@Override public boolean renderStatic(Vec3i translation,RenderHelper renderer,RenderBlocks renderBlocks,int pass){
  super.renderStatic(translation,renderer,renderBlocks,pass);
  ForgeDirection d1=ForgeDirection.NORTH;
  ForgeDirection d2=ForgeDirection.SOUTH;
  ForgeDirection d3=ForgeDirection.WEST;
  ForgeDirection d4=ForgeDirection.EAST;
  if (getFace() == ForgeDirection.NORTH) {
    d1=ForgeDirection.UP;
    d2=ForgeDirection.DOWN;
  }
 else   if (getFace() == ForgeDirection.SOUTH) {
    d1=ForgeDirection.DOWN;
    d2=ForgeDirection.UP;
  }
 else   if (getFace() == ForgeDirection.WEST) {
    d3=ForgeDirection.UP;
    d4=ForgeDirection.DOWN;
  }
 else   if (getFace() == ForgeDirection.EAST) {
    d3=ForgeDirection.DOWN;
    d4=ForgeDirection.UP;
  }
 else   if (getFace() == ForgeDirection.UP) {
    d3=ForgeDirection.EAST;
    d4=ForgeDirection.WEST;
  }
  if (getFace() == ForgeDirection.NORTH || getFace() == ForgeDirection.SOUTH) {
    d1=d1.getRotation(getFace());
    d2=d2.getRotation(getFace());
    d3=d3.getRotation(getFace());
    d4=d4.getRotation(getFace());
  }
  boolean s1=shouldRenderConnection(d1);
  boolean s2=shouldRenderConnection(d2);
  boolean s3=shouldRenderConnection(d3);
  boolean s4=shouldRenderConnection(d4);
  boolean[] openConnections=new boolean[6];
  double size=1 / 64D;
  double width=1 / 48D;
  double height=getHeight() / 16D;
  renderer.setColor(WireHelper.getColorForPowerLevel(getRedwireType(ForgeDirection.UNKNOWN),(byte)(255 / 2)));
  if ((s1 && s3) || (s3 && s2) || (s2 && s4)|| (s4 && s1)) {
    renderer.renderBox(new Vec3dCube(8 / 16D - width - size,height,8 / 16D - width - size,8 / 16D + width + size,height + size,8 / 16D + width + size),IconSupplier.wire);
  }
 else {
    renderer.renderBox(new Vec3dCube(8 / 16D - width,height,8 / 16D - width,8 / 16D + width,height + size,8 / 16D + width),IconSupplier.wire);
  }
  if (s4 || s3) {
    if (s3 || (!s1 && !s2))     renderer.renderBox(new Vec3dCube(s3 ? (openConnections[d3.ordinal()] ? -height - size : 0) : 5 / 16D,height,8 / 16D - width,8 / 16D - width,height + size,8 / 16D + width),IconSupplier.wire);
    if (s4 || (!s1 && !s2))     renderer.renderBox(new Vec3dCube(8 / 16D + width,height,8 / 16D - width,s4 ? (openConnections[d4.ordinal()] ? 1 + height + size : 1) : 11 / 16D,height + size,8 / 16D + width),IconSupplier.wire);
    if (s1)     renderer.renderBox(new Vec3dCube(8 / 16D - width,height,s1 ? (openConnections[d1.ordinal()] ? -height - size : 0) : 4 / 16D,8 / 16D + width,height + size,8 / 16D - width),IconSupplier.wire);
    if (s2)     renderer.renderBox(new Vec3dCube(8 / 16D - width,height,8 / 16D + width,8 / 16D + width,height + size,s2 ? (openConnections[d2.ordinal()] ? 1 + height + size : 1) : 12 / 16D),IconSupplier.wire);
  }
 else {
    renderer.renderBox(new Vec3dCube(8 / 16D - width,height,s1 ? (openConnections[d1.ordinal()] ? -height - size : 0) : 5 / 16D,8 / 16D + width,height + size,8 / 16D - width),IconSupplier.wire);
    renderer.renderBox(new Vec3dCube(8 / 16D - width,height,8 / 16D + width,8 / 16D + width,height + size,s2 ? (openConnections[d2.ordinal()] ? 1 + height + size : 1) : 11 / 16D),IconSupplier.wire);
  }
  return true;
}

Fixed version (ground truth):
@Override public boolean renderStatic(Vec3i translation,RenderHelper renderer,RenderBlocks renderBlocks,int pass){
  super.renderStatic(translation,renderer,renderBlocks,pass);
  ForgeDirection d1=ForgeDirection.NORTH;
  ForgeDirection d2=ForgeDirection.SOUTH;
  ForgeDirection d3=ForgeDirection.WEST;
  ForgeDirection d4=ForgeDirection.EAST;
  if (getFace() == ForgeDirection.NORTH) {
    d1=ForgeDirection.UP;
    d2=ForgeDirection.DOWN;
  }
 else   if (getFace() == ForgeDirection.SOUTH) {
    d1=ForgeDirection.DOWN;
    d2=ForgeDirection.UP;
  }
 else   if (getFace() == ForgeDirection.WEST) {
    d3=ForgeDirection.UP;
    d4=ForgeDirection.DOWN;
  }
 else   if (getFace() == ForgeDirection.EAST) {
    d3=ForgeDirection.DOWN;
    d4=ForgeDirection.UP;
  }
 else   if (getFace() == ForgeDirection.UP) {
    d3=ForgeDirection.EAST;
    d4=ForgeDirection.WEST;
  }
  if (getFace() == ForgeDirection.NORTH || getFace() == ForgeDirection.SOUTH) {
    d1=d1.getRotation(getFace());
    d2=d2.getRotation(getFace());
    d3=d3.getRotation(getFace());
    d4=d4.getRotation(getFace());
  }
  boolean s1=shouldRenderConnection(d1);
  boolean s2=shouldRenderConnection(d2);
  boolean s3=shouldRenderConnection(d3);
  boolean s4=shouldRenderConnection(d4);
  double size=1 / 64D;
  double width=1 / 48D;
  double height=getHeight() / 16D;
  renderer.setColor(WireHelper.getColorForPowerLevel(getRedwireType(ForgeDirection.UNKNOWN),(byte)(255 / 2)));
  if ((s1 && s3) || (s3 && s2) || (s2 && s4)|| (s4 && s1)) {
    renderer.renderBox(new Vec3dCube(8 / 16D - width - size,height,8 / 16D - width - size,8 / 16D + width + size,height + size,8 / 16D + width + size),IconSupplier.wire);
  }
 else {
    renderer.renderBox(new Vec3dCube(8 / 16D - width,height,8 / 16D - width,8 / 16D + width,height + size,8 / 16D + width),IconSupplier.wire);
  }
  if (s4 || s3) {
    if (s3 || (!s1 && !s2))     renderer.renderBox(new Vec3dCube(s3 ? (cornerConnect[d3.ordinal()] ? -height - size : 0) : 5 / 16D,height,8 / 16D - width,8 / 16D - width,height + size,8 / 16D + width),IconSupplier.wire);
    if (s4 || (!s1 && !s2))     renderer.renderBox(new Vec3dCube(8 / 16D + width,height,8 / 16D - width,s4 ? (cornerConnect[d4.ordinal()] ? 1 + height + size : 1) : 11 / 16D,height + size,8 / 16D + width),IconSupplier.wire);
    if (s1)     renderer.renderBox(new Vec3dCube(8 / 16D - width,height,s1 ? (cornerConnect[d1.ordinal()] ? -height - size : 0) : 4 / 16D,8 / 16D + width,height + size,8 / 16D - width),IconSupplier.wire);
    if (s2)     renderer.renderBox(new Vec3dCube(8 / 16D - width,height,8 / 16D + width,8 / 16D + width,height + size,s2 ? (cornerConnect[d2.ordinal()] ? 1 + height + size : 1) : 12 / 16D),IconSupplier.wire);
  }
 else {
    renderer.renderBox(new Vec3dCube(8 / 16D - width,height,s1 ? (cornerConnect[d1.ordinal()] ? -height - size : 0) : 5 / 16D,8 / 16D + width,height + size,8 / 16D - width),IconSupplier.wire);
    renderer.renderBox(new Vec3dCube(8 / 16D - width,height,8 / 16D + width,8 / 16D + width,height + size,s2 ? (cornerConnect[d2.ordinal()] ? 1 + height + size : 1) : 11 / 16D),IconSupplier.wire);
  }
  return true;
}