Text Widget allocate lines during design

The contents of a text widget is dynamically changed. Often the text is short enough so it fits in one line, however, sometimes texts cause the text widget to wrap (I am using the ‘Auto Wrap Text’ option) into two lines. Upon wrapping the widget requires more space as it must fit two lines instead of one which causes it to push away other widget above or beneath it.

Is there an option to pre-allocate text space for two lines instead of just one at design time?