Problem with WINDOW vertical scroolBar and ComboBoxes in(caption) and (button).

I tried to fix, but I'm not having success in my attempts.

The problem is the following:.

> I have a WINDOWS that contains some components.
> In this window I have a Vertical ScrollBar.

Whenever I use the scrolling window, the components are usually hidden, With the exception of the caption and button of the combobox!

See picture for sample;
WINDOW with components:


Scrroling window


If someone could correct this problem, please notify me.
This problem is not just with the components combobox.
EDITBOX->caption Too.

I do not veriquei with LISTBOX.