UI action - buttons in WF (modal window)

If I have UI action with IsModalDialog set to true and the Workflow has multiple UI screen steps. There are too many buttons, if the WF UI step has set IsFinalForm to false. The positions of buttons are probably not correct as well. The first screen is followed by second screen, which has set IsFinalForm to true and there are no buttons to finish the workflow.
first screen:

second screen: