Program: 1246
Project: 1246
Buggy source:
/** 
 * Renders the world.
 */
public void render(){
  queueRenderer();
  PostProcessingRenderer.getInstance().beginRenderScene();
  PerformanceMonitor.startActivity("String_Node_Str");
  getActiveCamera().lookThroughNormalized();
  _skysphere.render();
  PerformanceMonitor.endActivity();
  PerformanceMonitor.startActivity("String_Node_Str");
  getActiveCamera().lookThrough();
  _player.render();
  glEnable(GL_LIGHT0);
  boolean headUnderWater=false;
  if (_cameraMode == CAMERA_MODE.PLAYER)   _player.isHeadUnderWater();
  if (_wireframe)   glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
  PerformanceMonitor.startActivity("String_Node_Str");
  while (_renderQueueOpaque.size() > 0)   _renderQueueOpaque.poll().render();
  PerformanceMonitor.endActivity();
  PerformanceMonitor.startActivity("String_Node_Str");
  while (_renderQueueChunksOpaque.size() > 0)   _renderQueueChunksOpaque.poll().render(ChunkMesh.RENDER_PHASE.OPAQUE);
  PerformanceMonitor.endActivity();
  PerformanceMonitor.startActivity("String_Node_Str");
  glEnable(GL_BLEND);
  glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
  while (_renderQueueChunksSortedBillboards.size() > 0)   _renderQueueChunksSortedBillboards.poll().render(ChunkMesh.RENDER_PHASE.BILLBOARD_AND_TRANSLUCENT);
  PerformanceMonitor.endActivity();
  PerformanceMonitor.startActivity("String_Node_Str");
  while (_renderQueueTransparent.size() > 0)   _renderQueueTransparent.poll().render();
  PerformanceMonitor.endActivity();
  PerformanceMonitor.startActivity("String_Node_Str");
  if (headUnderWater) {
    glDisable(GL11.GL_CULL_FACE);
  }
  while (_renderQueueChunksSortedWater.size() > 0) {
    Chunk c=_renderQueueChunksSortedWater.poll();
    for (int j=0; j < 2; j++) {
      if (j == 0) {
        glColorMask(false,false,false,false);
        c.render(ChunkMesh.RENDER_PHASE.WATER_AND_ICE);
      }
 else {
        glColorMask(true,true,true,true);
        c.render(ChunkMesh.RENDER_PHASE.WATER_AND_ICE);
      }
    }
  }
  _player.renderExtractionOverlay();
  glDisable(GL_BLEND);
  if (headUnderWater)   glEnable(GL11.GL_CULL_FACE);
  if (_wireframe)   glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
  glDisable(GL_LIGHT0);
  PerformanceMonitor.endActivity();
  PostProcessingRenderer.getInstance().endRenderScene();
  PerformanceMonitor.startActivity("String_Node_Str");
  PostProcessingRenderer.getInstance().renderScene();
  PerformanceMonitor.endActivity();
  if (_cameraMode == CAMERA_MODE.PLAYER)   _player.renderFirstPersonViewElements();
}

Fixed version (ground truth):
/** 
 * Renders the world.
 */
public void render(){
  queueRenderer();
  PostProcessingRenderer.getInstance().beginRenderScene();
  PerformanceMonitor.startActivity("String_Node_Str");
  getActiveCamera().lookThroughNormalized();
  _skysphere.render();
  PerformanceMonitor.endActivity();
  PerformanceMonitor.startActivity("String_Node_Str");
  getActiveCamera().lookThrough();
  _player.render();
  glEnable(GL_LIGHT0);
  boolean headUnderWater=false;
  if (_cameraMode == CAMERA_MODE.PLAYER)   headUnderWater=_player.isHeadUnderWater();
  if (_wireframe)   glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
  PerformanceMonitor.startActivity("String_Node_Str");
  while (_renderQueueOpaque.size() > 0)   _renderQueueOpaque.poll().render();
  PerformanceMonitor.endActivity();
  PerformanceMonitor.startActivity("String_Node_Str");
  while (_renderQueueChunksOpaque.size() > 0)   _renderQueueChunksOpaque.poll().render(ChunkMesh.RENDER_PHASE.OPAQUE);
  PerformanceMonitor.endActivity();
  PerformanceMonitor.startActivity("String_Node_Str");
  glEnable(GL_BLEND);
  glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
  while (_renderQueueChunksSortedBillboards.size() > 0)   _renderQueueChunksSortedBillboards.poll().render(ChunkMesh.RENDER_PHASE.BILLBOARD_AND_TRANSLUCENT);
  PerformanceMonitor.endActivity();
  PerformanceMonitor.startActivity("String_Node_Str");
  while (_renderQueueTransparent.size() > 0)   _renderQueueTransparent.poll().render();
  PerformanceMonitor.endActivity();
  PerformanceMonitor.startActivity("String_Node_Str");
  if (headUnderWater) {
    glDisable(GL11.GL_CULL_FACE);
  }
  while (_renderQueueChunksSortedWater.size() > 0) {
    Chunk c=_renderQueueChunksSortedWater.poll();
    for (int j=0; j < 2; j++) {
      if (j == 0) {
        glColorMask(false,false,false,false);
        c.render(ChunkMesh.RENDER_PHASE.WATER_AND_ICE);
      }
 else {
        glColorMask(true,true,true,true);
        c.render(ChunkMesh.RENDER_PHASE.WATER_AND_ICE);
      }
    }
  }
  _player.renderExtractionOverlay();
  glDisable(GL_BLEND);
  if (headUnderWater)   glEnable(GL11.GL_CULL_FACE);
  if (_wireframe)   glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
  glDisable(GL_LIGHT0);
  PerformanceMonitor.endActivity();
  PostProcessingRenderer.getInstance().endRenderScene();
  PerformanceMonitor.startActivity("String_Node_Str");
  PostProcessingRenderer.getInstance().renderScene();
  PerformanceMonitor.endActivity();
  if (_cameraMode == CAMERA_MODE.PLAYER)   _player.renderFirstPersonViewElements();
}