Unchecking "Allow Undefined Strings" for System Combo Box Doesn't Work

Why will my system combo box still allow undefined strings even after unchecking "Allow Undefined Strings"?
The combo box works nicely because it allows the user to start typing in the string they want and the combo box will finish it off for them, but if you hit delete or change a letter turning it into an undefined string, the combo box will accept it.
Edit: I'm using LV 8.5
Message Edited by Sima on 01-14-2009 07:03 PM
Message Edited by Sima on 01-14-2009 07:04 PM
Attachments:
systemcombobox.vi ‏8 KB

I don't see the issue with Delete, but Backspace causes what I think you're seeing. If I type "a" into your example combo box, it autocompletes the "re" in the word "are". If I hit delete, nothing happens. If I type other characters, nothing happens. But, if I hit backspace, then the "re" disappears, leaving just "a". If I click outside the combo box, the a is left, and a string indicator picks this up. Thus, the combo box has allowed an undefined string.
Ouch. A little help from NI, please?
Maybe this is what "festo" was seeing here:
http://forums.ni.com/ni/board/message?board.id=170&requireLogin=False&thread.id=114297
(no offense intended I figured you were just slowing your code down... but thought it was an opportunity to stop others from starting bad habits with Next Multiple.)
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Unchecking "Allow Undefined Strings" for System Combo Box Doesn't Work

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