Height has to do with the height of the form. When I change the height, the form height changes, and this works correctly, and the Form stays exactly the same size and in the same position on the screen when I change between tabs (or if it's in Wizard Mode with Prev/Next).
The problem is: The Buttons move up and down depending on how much height the content of the form take up, and the buttons display directly under the bottom most item of the form. (As you can see by the 3 consecutive screen shots), instead of them staying at the bottom of the form.
"Bottom of Form" would suggest that the buttons should appear at the bottom of the form.
I know this works somehow, as one of the systems my customer logs into has a wizard style form (which actually looks like it's made with AwareIM), and the popup form stays in the middle of the screen, and the size stays the same and the buttons don't move up or down when moving between wizard steps. This way, the buttons are always in the same place on the form, which is not only better if the user just needs to press NEXT, NEXT, NEXT, but is also neat and tidy and looks and feels professional.
