Mixing fluid and fixed interfaces? Sometimes we have to. (non web)

At the time I'm redesigning some desktop application. Look at the illustration below.

Window on the LEFT side of the illustration should be resizable since it contains table which can have any number of columns and horizontal scroll is not the best pattern for tables.

At the same time another tab of the same window (RIGHT window) contains small amount of controls and when window is big there are too much free space around those few controls.

Some pattern that is relevant for my case:

You see, guys don't care about too much free space at all.

What do you think? Do you have some suitable patterns in mind?