UIComponent Messes Up Component Tabbing

I’ve built two components:

[LIST]
[]Text Input Box
[
]List Box[/LIST]Both component classes extend the UIComponent class. When I have just Text Input Boxes in the library, I can ‘tab’ between them with no problem.

However, as soon as I put the List Box into the same library (Notice that I said library, not stage), I can’t tab between Text Input Boxes at all.

If I go into the List Box’s uncompiled MovieClip and delete the UIComponent instance from the second frame, I can magically tab between Text Input Boxes again…

Any ideas as to what might be causing this?

Thank you very much in advance…