Program: 81884
Project: 81884
Buggy source:
protected void renderLivingLabel(String par2Str,double par3,double par5,double par7,int par9,int width,int height,float angle){
  int borderSize=2;
  GL11.glDisable(GL11.GL_CULL_FACE);
  GL11.glDisable(GL11.GL_TEXTURE_2D);
  FontRenderer var11=Minecraft.getMinecraft().getRenderManager().getFontRenderer();
  float var12=0.6F;
  float var13=0.016666668F * var12;
  GL11.glPushMatrix();
  GL11.glTranslatef((float)par3 + 0.5F,(float)par5,(float)par7 + 0.5F);
  GL11.glNormal3f(0.0F,1.0F,0.0F);
  GL11.glRotatef(-angle,0.0F,1.0F,0.0F);
  GL11.glScalef(-var13,-var13,var13);
  GL11.glDisable(GL11.GL_LIGHTING);
  if (par9 == 0) {
    GL11.glDepthMask(false);
    GL11.glEnable(GL11.GL_BLEND);
    GL11.glBlendFunc(GL11.GL_SRC_ALPHA,GL11.GL_ONE_MINUS_SRC_ALPHA);
    Tessellator var14=Tessellator.getInstance();
    VertexBuffer worldrenderer=var14.getBuffer();
    byte var15=0;
    worldrenderer.begin(7,DefaultVertexFormats.POSITION_COLOR);
    worldrenderer.color(0.0F,0.0F,0.0F,0.25F).pos((double)(-width / 2 - borderSize),(double)(-borderSize + var15),0.0D).endVertex();
    worldrenderer.color(0.0F,0.0F,0.0F,0.25F).pos((double)(-width / 2 - borderSize),(double)(height + var15),0.0D).endVertex();
    worldrenderer.color(0.0F,0.0F,0.0F,0.25F).pos((double)(width / 2 + borderSize),(double)(height + var15),0.0D).endVertex();
    worldrenderer.color(0.0F,0.0F,0.0F,0.25F).pos((double)(width / 2 + borderSize),(double)(-borderSize + var15),0.0D).endVertex();
    var14.draw();
  }
  GL11.glEnable(GL11.GL_TEXTURE_2D);
  GL11.glEnable(GL11.GL_DEPTH_TEST);
  GL11.glDepthMask(true);
  var11.drawString(par2Str,-width / 2 + borderSize,0,0xFFFFFF);
  GL11.glEnable(GL11.GL_LIGHTING);
  GL11.glDisable(GL11.GL_BLEND);
  GL11.glColor4f(1.0F,1.0F,1.0F,1.0F);
  GL11.glPopMatrix();
  GL11.glEnable(GL11.GL_CULL_FACE);
}

Fixed version (ground truth):
protected void renderLivingLabel(String par2Str,double par3,double par5,double par7,int par9,int width,int height,float angle){
  int borderSize=2;
  GL11.glDisable(GL11.GL_CULL_FACE);
  GL11.glDisable(GL11.GL_TEXTURE_2D);
  FontRenderer var11=Minecraft.getMinecraft().getRenderManager().getFontRenderer();
  float var12=0.6F;
  float var13=0.016666668F * var12;
  GL11.glPushMatrix();
  GL11.glTranslatef((float)par3 + 0.5F,(float)par5,(float)par7 + 0.5F);
  GL11.glNormal3f(0.0F,1.0F,0.0F);
  GL11.glRotatef(-angle,0.0F,1.0F,0.0F);
  GL11.glScalef(-var13,-var13,var13);
  GL11.glDisable(GL11.GL_LIGHTING);
  if (par9 == 0) {
    GL11.glDepthMask(false);
    GL11.glEnable(GL11.GL_BLEND);
    GL11.glBlendFunc(GL11.GL_SRC_ALPHA,GL11.GL_ONE_MINUS_SRC_ALPHA);
    Tessellator var14=Tessellator.getInstance();
    BufferBuilder worldrenderer=var14.getBuffer();
    byte var15=0;
    worldrenderer.begin(7,DefaultVertexFormats.POSITION_COLOR);
    worldrenderer.color(0.0F,0.0F,0.0F,0.25F).pos((double)(-width / 2 - borderSize),(double)(-borderSize + var15),0.0D).endVertex();
    worldrenderer.color(0.0F,0.0F,0.0F,0.25F).pos((double)(-width / 2 - borderSize),(double)(height + var15),0.0D).endVertex();
    worldrenderer.color(0.0F,0.0F,0.0F,0.25F).pos((double)(width / 2 + borderSize),(double)(height + var15),0.0D).endVertex();
    worldrenderer.color(0.0F,0.0F,0.0F,0.25F).pos((double)(width / 2 + borderSize),(double)(-borderSize + var15),0.0D).endVertex();
    var14.draw();
  }
  GL11.glEnable(GL11.GL_TEXTURE_2D);
  GL11.glEnable(GL11.GL_DEPTH_TEST);
  GL11.glDepthMask(true);
  var11.drawString(par2Str,-width / 2 + borderSize,0,0xFFFFFF);
  GL11.glEnable(GL11.GL_LIGHTING);
  GL11.glDisable(GL11.GL_BLEND);
  GL11.glColor4f(1.0F,1.0F,1.0F,1.0F);
  GL11.glPopMatrix();
  GL11.glEnable(GL11.GL_CULL_FACE);
}