Program: 156357
Project: 156357
Buggy source:
@Override public void renderTileEntityFast(TileFiller tile,double x,double y,double z,float partialTicks,int destroyStage,VertexBuffer vb){
  Minecraft.getMinecraft().mcProfiler.startSection("String_Node_Str");
  Minecraft.getMinecraft().mcProfiler.startSection("String_Node_Str");
  for (  MutableTriple<BlockPos,ItemStack,Long> renderTask : tile.clientPlaceTasks) {
    ItemStack stack=renderTask.getMiddle();
    Vec3d prevPos=tile.prevClientPlaceTasks.stream().filter(renderTaskLocal -> renderTaskLocal.getLeft().equals(renderTask.getLeft())).map(tile::getTaskPos).findFirst().orElse(tile.getTaskPos(MutableTriple.of(tile.getPos(),ItemStack.EMPTY,0L)));
    Vec3d pos=prevPos.add(tile.getTaskPos(renderTask).subtract(prevPos).scale(partialTicks));
    ItemRenderUtil.renderItemStack(x - tile.getPos().getX() + pos.xCoord,y - tile.getPos().getY() + pos.yCoord,z - tile.getPos().getZ() + pos.zCoord,stack,EnumFacing.SOUTH,vb);
    ItemRenderUtil.endItemBatch();
  }
  Vec3d robotPos=tile.robotPos;
  if (robotPos != null) {
    if (tile.prevRobotPos != null) {
      robotPos=tile.prevRobotPos.add(robotPos.subtract(tile.prevRobotPos).scale(partialTicks));
    }
    RenderEntity.renderOffsetAABB(new AxisAlignedBB(robotPos.subtract(VecUtil.VEC_HALF),robotPos.add(VecUtil.VEC_HALF)),x - tile.getPos().getX(),y - tile.getPos().getY(),z - tile.getPos().getZ());
    vb.setTranslation(x - tile.getPos().getX(),y - tile.getPos().getY(),z - tile.getPos().getZ());
    for (    MutablePair<BlockPos,Long> breakTask : tile.clientBreakTasks) {
      LaserRenderer_BC8.renderLaserDynamic(new LaserData_BC8(BuildCraftLaserManager.POWERS[(int)Math.round(MathUtil.clamp(breakTask.getRight() * 1D / tile.getTarget(breakTask),0D,1D) * (BuildCraftLaserManager.POWERS.length - 1))],robotPos,new Vec3d(breakTask.getLeft()).add(VecUtil.VEC_HALF),1 / 16D),vb);
    }
  }
  vb.setTranslation(0,0,0);
  Minecraft.getMinecraft().mcProfiler.endSection();
  Minecraft.getMinecraft().mcProfiler.endSection();
}

Fixed version (ground truth):
@Override public void renderTileEntityFast(TileFiller tile,double x,double y,double z,float partialTicks,int destroyStage,VertexBuffer vb){
  Minecraft.getMinecraft().mcProfiler.startSection("String_Node_Str");
  Minecraft.getMinecraft().mcProfiler.startSection("String_Node_Str");
  for (  MutableTriple<BlockPos,ItemStack,Long> renderTask : tile.clientPlaceTasks) {
    ItemStack stack=renderTask.getMiddle();
    Vec3d prevPos=tile.prevClientPlaceTasks.stream().filter(renderTaskLocal -> renderTaskLocal.getLeft().equals(renderTask.getLeft())).map(tile::getTaskPos).findFirst().orElse(tile.getTaskPos(MutableTriple.of(tile.getPos(),ItemStack.EMPTY,0L)));
    Vec3d pos=prevPos.add(tile.getTaskPos(renderTask).subtract(prevPos).scale(partialTicks));
    ItemRenderUtil.renderItemStack(x - tile.getPos().getX() + pos.xCoord,y - tile.getPos().getY() + pos.yCoord,z - tile.getPos().getZ() + pos.zCoord,stack,tile.getWorld().getCombinedLight(tile.getPos(),0),EnumFacing.SOUTH,vb);
    ItemRenderUtil.endItemBatch();
  }
  Vec3d robotPos=tile.robotPos;
  if (robotPos != null) {
    if (tile.prevRobotPos != null) {
      robotPos=tile.prevRobotPos.add(robotPos.subtract(tile.prevRobotPos).scale(partialTicks));
    }
    RenderEntity.renderOffsetAABB(new AxisAlignedBB(robotPos.subtract(VecUtil.VEC_HALF),robotPos.add(VecUtil.VEC_HALF)),x - tile.getPos().getX(),y - tile.getPos().getY(),z - tile.getPos().getZ());
    vb.setTranslation(x - tile.getPos().getX(),y - tile.getPos().getY(),z - tile.getPos().getZ());
    for (    MutablePair<BlockPos,Long> breakTask : tile.clientBreakTasks) {
      LaserRenderer_BC8.renderLaserDynamic(new LaserData_BC8(BuildCraftLaserManager.POWERS[(int)Math.round(MathUtil.clamp(breakTask.getRight() * 1D / tile.getTarget(breakTask),0D,1D) * (BuildCraftLaserManager.POWERS.length - 1))],robotPos,new Vec3d(breakTask.getLeft()).add(VecUtil.VEC_HALF),1 / 16D),vb);
    }
  }
  vb.setTranslation(0,0,0);
  Minecraft.getMinecraft().mcProfiler.endSection();
  Minecraft.getMinecraft().mcProfiler.endSection();
}