Is this already solved? I think my problem is somewhat related.
I have a ContentPanel with FitLayout, with ToolBar as TopComponent and PagingToolBar as BottomComponent. Whenever the window is resized to a smaller size, the BottomComponent is not displayed. When the window is maximized again, the PagingToolBar is 'floating' in the middle of my grid.
I tried reloading the grid again whenever the window is resized, and everything is displayed correctly. However, this was just an experiment, and reloading the grid for every window resize is simply not acceptable.