Program: 32112
Project: 32112
Buggy source:
/** 
 * Initialize the call UI
 * @param callInviteParams the invite params
 * @param aLocalVideoPosition position of the local video attendee
 */
private void initCallUI(final JsonObject callInviteParams,VideoLayoutConfiguration aLocalVideoPosition){
  Log.d(LOG_TAG,"String_Node_Str");
  if (isCallEnded()) {
    Log.w(LOG_TAG,"String_Node_Str");
    return;
  }
  if (isVideo()) {
    Log.d(LOG_TAG,"String_Node_Str");
    VideoRendererGui.setView(mCallView,new Runnable(){
      @Override public void run(){
        mUIThreadHandler.post(new Runnable(){
          @Override public void run(){
            if (null == mPeerConnectionFactory) {
              Log.d(LOG_TAG,"String_Node_Str");
              mPeerConnectionFactory=new PeerConnectionFactory();
              createVideoTrack();
              createAudioTrack();
              createLocalStream();
              if (null != callInviteParams) {
                dispatchOnStateDidChange(CALL_STATE_RINGING);
                setRemoteDescription(callInviteParams);
              }
            }
          }
        }
);
      }
    }
);
    try {
      Log.d(LOG_TAG,"String_Node_Str");
      if (isConference()) {
        mLargeRemoteRenderer=VideoRendererGui.createGui(0,0,100,100,VideoRendererGui.ScalingType.SCALE_ASPECT_FIT,false);
      }
 else {
        mLargeRemoteRenderer=VideoRendererGui.createGui(0,0,100,100,VideoRendererGui.ScalingType.SCALE_ASPECT_FILL,false);
      }
      mLargeLocalRendererCallbacks=VideoRendererGui.create(0,0,100,100,VideoRendererGui.ScalingType.SCALE_ASPECT_FILL,true);
      mLargeLocalRenderer=new VideoRenderer(mLargeLocalRendererCallbacks);
      if (null != aLocalVideoPosition) {
        mSmallLocalRendererCallbacks=VideoRendererGui.create(aLocalVideoPosition.mX,aLocalVideoPosition.mY,aLocalVideoPosition.mWidth,aLocalVideoPosition.mHeight,VideoRendererGui.ScalingType.SCALE_ASPECT_FIT,true);
        Log.d(LOG_TAG,"String_Node_Str" + aLocalVideoPosition);
      }
 else {
        mSmallLocalRendererCallbacks=VideoRendererGui.create(5,5,25,25,VideoRendererGui.ScalingType.SCALE_ASPECT_FIT,true);
      }
      mSmallLocalRenderer=new VideoRenderer(mSmallLocalRendererCallbacks);
    }
 catch (    Exception e) {
      Log.e(LOG_TAG,"String_Node_Str" + e.getMessage());
    }
    mCallView.setVisibility(View.VISIBLE);
  }
 else {
    Log.d(LOG_TAG,"String_Node_Str");
    mUIThreadHandler.post(new Runnable(){
      @Override public void run(){
        if (null == mPeerConnectionFactory) {
          mPeerConnectionFactory=new PeerConnectionFactory();
          createAudioTrack();
          createLocalStream();
          if (null != callInviteParams) {
            dispatchOnStateDidChange(CALL_STATE_RINGING);
            setRemoteDescription(callInviteParams);
          }
        }
      }
    }
);
  }
}

Fixed version (ground truth):
/** 
 * Initialize the call UI
 * @param callInviteParams the invite params
 * @param aLocalVideoPosition position of the local video attendee
 */
private void initCallUI(final JsonObject callInviteParams,VideoLayoutConfiguration aLocalVideoPosition){
  Log.d(LOG_TAG,"String_Node_Str");
  if (isCallEnded()) {
    Log.w(LOG_TAG,"String_Node_Str");
    return;
  }
  if (isVideo()) {
    Log.d(LOG_TAG,"String_Node_Str");
    try {
      VideoRendererGui.setView(mCallView,new Runnable(){
        @Override public void run(){
          mUIThreadHandler.post(new Runnable(){
            @Override public void run(){
              if (null == mPeerConnectionFactory) {
                Log.d(LOG_TAG,"String_Node_Str");
                mPeerConnectionFactory=new PeerConnectionFactory();
                createVideoTrack();
                createAudioTrack();
                createLocalStream();
                if (null != callInviteParams) {
                  dispatchOnStateDidChange(CALL_STATE_RINGING);
                  setRemoteDescription(callInviteParams);
                }
              }
            }
          }
);
        }
      }
);
    }
 catch (    Exception e) {
      Log.e(LOG_TAG,"String_Node_Str" + e.getMessage());
    }
    try {
      Log.d(LOG_TAG,"String_Node_Str");
      if (isConference()) {
        mLargeRemoteRenderer=VideoRendererGui.createGui(0,0,100,100,VideoRendererGui.ScalingType.SCALE_ASPECT_FIT,false);
      }
 else {
        mLargeRemoteRenderer=VideoRendererGui.createGui(0,0,100,100,VideoRendererGui.ScalingType.SCALE_ASPECT_FILL,false);
      }
      mLargeLocalRendererCallbacks=VideoRendererGui.create(0,0,100,100,VideoRendererGui.ScalingType.SCALE_ASPECT_FILL,true);
      mLargeLocalRenderer=new VideoRenderer(mLargeLocalRendererCallbacks);
      if (null != aLocalVideoPosition) {
        mSmallLocalRendererCallbacks=VideoRendererGui.create(aLocalVideoPosition.mX,aLocalVideoPosition.mY,aLocalVideoPosition.mWidth,aLocalVideoPosition.mHeight,VideoRendererGui.ScalingType.SCALE_ASPECT_FIT,true);
        Log.d(LOG_TAG,"String_Node_Str" + aLocalVideoPosition);
      }
 else {
        mSmallLocalRendererCallbacks=VideoRendererGui.create(5,5,25,25,VideoRendererGui.ScalingType.SCALE_ASPECT_FIT,true);
      }
      mSmallLocalRenderer=new VideoRenderer(mSmallLocalRendererCallbacks);
    }
 catch (    Exception e) {
      Log.e(LOG_TAG,"String_Node_Str" + e.getMessage());
    }
    mCallView.setVisibility(View.VISIBLE);
  }
 else {
    Log.d(LOG_TAG,"String_Node_Str");
    mUIThreadHandler.post(new Runnable(){
      @Override public void run(){
        if (null == mPeerConnectionFactory) {
          mPeerConnectionFactory=new PeerConnectionFactory();
          createAudioTrack();
          createLocalStream();
          if (null != callInviteParams) {
            dispatchOnStateDidChange(CALL_STATE_RINGING);
            setRemoteDescription(callInviteParams);
          }
        }
      }
    }
);
  }
}