When updating the centre coordinates of a eclipse through a variable, in a normal processing window a new eclipse is drawn.  However when in the G4P additional window the original eclipse is moved.  I want to emulate the normal processing window behaviour in the additional windows.

In the code below, in the main window as the "blob" is moved a "painted" effect is created, however in the additional window a shaking blob moves.

Any help would be greatly appreciated.

2. import processing.opengl.*;
3. import guicomponents.*;
4. 
   
5. private GWindow[] window;
6. int blobX = 0, blobY = 0;
7. 
   
8. void setup() {
9.   size(600, 200, OPENGL);
10.   background(255);
11.   window = new GWindow[1];
12.   window[0] = new GWindow(this, "Window", 100, 100, 600,200,false, OPENGL);
13.   window[0].setBackground(255);
14.   window[0].addDrawHandler(this, "windowDraw");
15. }
16. 
    
17. void draw() {   
18.   noStroke();
19.   fill(255,0,0);
20.   ellipse(blobX, blobY, random(20,40), random(20,40));
21.   fill(255,0,0, 180);
22.   ellipse(blobX, blobY, (random(20,40)+5), (random(20,40))+5);
23.   fill(255,0,0, 125);
24.   ellipse(blobX, blobY, (random(20,40)+10), (random(20,40))+10);
25. }
26. 
    
27. public void windowDraw(GWinApplet appc, GWinData windata) {
28.   appc.noStroke();
29.   appc.fill(255,0,0);
30.   appc.ellipse(blobX, blobY, random(40, 65),random(40, 65));
31.   appc.fill(255,0,0, 180);
32.   appc.ellipse(blobX, blobY, random(40, 65)+10,random(40, 65)+10);
33.   appc.fill(255,0,0, 125);
34.   appc.ellipse(blobX, blobY, random(40, 65)+20,random(40, 65)+20);
35. }
36. 
    
37. //Use the X and Y keys to move the blob
38. public void keyPressed() {
39.   if (key == 'x')
40.     blobX = blobX +10;
41.   if (key == 'y')
42.     blobY = blobY + 10;
43. }