Scrollbar steals focus...

I have a bunch of GUI code that basically does something like:

1) If there's more than N things to show, display a scrollbar.

2) Display up to N things (which N things depends on the scrollbar setting, if there is one)

3) Display an TextField.

The interesting thing is that I can add things to the list by typing into the TextField ... and when I reach N+1 things, the TextField loses focus.

If I display the TextField before I display (or don't display) the scrollbar, the problem goes away.

Note that displaying a varying number of things doesn't cause the EditField to lose focus; it's the scrollbar being drawn that causes the problem.

Here's a code fragment:

Code (csharp):

1. function OnGUI () {
2.     if( visible ){
3.         GUI.skin = hudSkin;
4.         consoleRect = GUI.Window(0, consoleRect, ConsoleWindow, "Weasel Console v0.2");
5.     }
6. }
7.  
8. function ConsoleWindow( windowID : int ){
9.     var textWidth : int = Screen.width - 80;
10.     var textHeight : int = 28;
11.    
12.     while(transcript.length > maxTranscriptLength){
13.         transcript.Shift();
14.     }
15.     while(commandHistory.length > maxCommandHistoryLength){
16.         commandHistory.Pop();
17.     }
18.    
19.     commandLine = GUI.TextField(Rect(24,204,textWidth - 112, textHeight + 8), commandLine);
20.    
21.     if(transcript.length > 5){
22.         transcriptScroll = GUI.VerticalScrollbar(Rect(textWidth+24, 48, 16, 140), transcriptScroll, 5, transcript.length, 0);
23.     } else {
24.         transcriptScroll = 0;
25.     }
26.    
27.     GUI.Label(Rect(24,24,160,28), "Scroll: " + transcriptScroll);
28.    
29.     var j : int = 0;
30.     for(var i = 0; i < 5; i++){
31.         j = transcript.length - 5 - transcriptScroll + i;
32.         if( j >= 0  j < transcript.length){
33.             GUI.Label(Rect(24, 48 + i*textHeight, textWidth, textHeight), transcript[j]);
34.         }
35.     }
36.    
37.     if(GUI.Button(Rect(textWidth - 80, 198, 120, 48),"Make It So!")){
38.         if(commandLine != ""){
39.             Globals.ProcessCommand(commandLine);
40.             commandLine = "";
41.         }
42.     }
43. }

I've already moved the EditField above the scrollbar code which has worked around the problem.