Program: 58958
Project: 58958
Buggy source:
public synchronized void toggleLayoutMode(){
  if (layoutMode.equals(ARemoteViewLayoutRenderStyle.LayoutMode.BUCKET))   layoutMode=ARemoteViewLayoutRenderStyle.LayoutMode.LIST;
 else   layoutMode=ARemoteViewLayoutRenderStyle.LayoutMode.BUCKET;
  if (layoutMode.equals(ARemoteViewLayoutRenderStyle.LayoutMode.BUCKET)) {
    layoutRenderStyle=new BucketLayoutRenderStyle(viewFrustum,layoutRenderStyle);
    bucketMouseWheelListener=new BucketMouseWheelListener(this,(BucketLayoutRenderStyle)layoutRenderStyle);
    parentGLCanvas.removeMouseWheelListener(pickingTriggerMouseAdapter);
    parentGLCanvas.addMouseWheelListener(bucketMouseWheelListener);
    glConnectionLineRenderer=new GLConnectionLineRendererBucket(focusLevel,stackLevel,poolLevel);
  }
 else   if (layoutMode.equals(ARemoteViewLayoutRenderStyle.LayoutMode.JUKEBOX)) {
    layoutRenderStyle=new JukeboxLayoutRenderStyle(viewFrustum,layoutRenderStyle);
    parentGLCanvas.removeMouseWheelListener(bucketMouseWheelListener);
    parentGLCanvas.addMouseWheelListener(pickingTriggerMouseAdapter);
    glConnectionLineRenderer=new GLConnectionLineRendererJukebox(focusLevel,stackLevel,poolLevel);
  }
 else   if (layoutMode.equals(ARemoteViewLayoutRenderStyle.LayoutMode.LIST)) {
    layoutRenderStyle=new ListLayoutRenderStyle(viewFrustum,layoutRenderStyle);
    glConnectionLineRenderer=null;
  }
  focusLevel=layoutRenderStyle.initFocusLevel();
  stackLevel=layoutRenderStyle.initStackLevel(bucketMouseWheelListener.isZoomedIn());
  poolLevel=layoutRenderStyle.initPoolLevel(bucketMouseWheelListener.isZoomedIn(),-1);
  selectionLevel=layoutRenderStyle.initMemoLevel();
  transitionLevel=layoutRenderStyle.initTransitionLevel();
  spawnLevel=layoutRenderStyle.initSpawnLevel();
  viewFrustum.setProjectionMode(layoutRenderStyle.getProjectionMode());
  parentGLCanvas.setSize(parentGLCanvas.getWidth(),parentGLCanvas.getHeight());
}

Fixed version (ground truth):
public synchronized void toggleLayoutMode(){
  if (layoutMode.equals(ARemoteViewLayoutRenderStyle.LayoutMode.BUCKET))   layoutMode=ARemoteViewLayoutRenderStyle.LayoutMode.LIST;
 else   layoutMode=ARemoteViewLayoutRenderStyle.LayoutMode.BUCKET;
  if (layoutMode.equals(ARemoteViewLayoutRenderStyle.LayoutMode.BUCKET)) {
    layoutRenderStyle=new BucketLayoutRenderStyle(viewFrustum,layoutRenderStyle);
    bucketMouseWheelListener=new BucketMouseWheelListener(this,(BucketLayoutRenderStyle)layoutRenderStyle);
    parentGLCanvas.removeMouseWheelListener(pickingTriggerMouseAdapter);
    parentGLCanvas.removeMouseListener(pickingTriggerMouseAdapter);
    parentGLCanvas.addMouseWheelListener(bucketMouseWheelListener);
    parentGLCanvas.addMouseListener(bucketMouseWheelListener);
    glConnectionLineRenderer=new GLConnectionLineRendererBucket(focusLevel,stackLevel,poolLevel);
  }
 else   if (layoutMode.equals(ARemoteViewLayoutRenderStyle.LayoutMode.JUKEBOX)) {
    layoutRenderStyle=new JukeboxLayoutRenderStyle(viewFrustum,layoutRenderStyle);
    parentGLCanvas.removeMouseWheelListener(bucketMouseWheelListener);
    parentGLCanvas.addMouseWheelListener(pickingTriggerMouseAdapter);
    glConnectionLineRenderer=new GLConnectionLineRendererJukebox(focusLevel,stackLevel,poolLevel);
  }
 else   if (layoutMode.equals(ARemoteViewLayoutRenderStyle.LayoutMode.LIST)) {
    layoutRenderStyle=new ListLayoutRenderStyle(viewFrustum,layoutRenderStyle);
    glConnectionLineRenderer=null;
  }
  focusLevel=layoutRenderStyle.initFocusLevel();
  stackLevel=layoutRenderStyle.initStackLevel(bucketMouseWheelListener.isZoomedIn());
  poolLevel=layoutRenderStyle.initPoolLevel(bucketMouseWheelListener.isZoomedIn(),-1);
  selectionLevel=layoutRenderStyle.initMemoLevel();
  transitionLevel=layoutRenderStyle.initTransitionLevel();
  spawnLevel=layoutRenderStyle.initSpawnLevel();
  viewFrustum.setProjectionMode(layoutRenderStyle.getProjectionMode());
  parentGLCanvas.setSize(parentGLCanvas.getWidth(),parentGLCanvas.getHeight());
}