AnyScreen - Why App Windows Display Errors But Handcoded Windows Do Not?

The screenshot shows the AnyScreen display of a standard ABC window from a test app.
The text results from a second combo control that depends upon what is selected in the first combo.
Therefore, the queue for the second combo is empty.

IF I add a single default record to this queue in the Init method, that second combo control will correctly display w/ AnyScreen. This to me seems like an obvious bug - a combo w/out any queue records will not display.

However, if I hand code a window with a combo and use an empty queue, AnyScreen will display the combo control.

What possibly could be different with a straight forward App procedure that would explain the difference?