TAdvPopupMenu mbBreak issue

Hi !

I am using TAdvPopuMenu and would like to have menu items in 3 columns, 1st co 4 items, 2nd 5 and 3rd 4 items.
I have two items between cols: Break=mbBreak or mbBarBreak.
What is the transparent area between columns ? Also because columns have non equal items the bottom part of col 1&3 are transparent. Is it possible to show the popup in rectangular area without transparency ?