Suppose we have VBoxLayout setup for LayoutContainer, and we added 3 ContentPanels.
After that all 3 panels as expected resized and thay have same height. But than we removed one panel calling LayoutContainer remove() method, and than added new panel to container.
Now is the problem, after addind that last panel VBoxLayout didn't resize all panels that already exists,
so thay all panels doesnt have same height.
What is can be problem with?