Qt Creator 11.0.2 design view inconsistent with execution view

Labels and buttons are placed, the button is placed in a horizontal layout, and a vertical layout has been added to the top-level widget.

In the preview and execution, the label is displayed extended vertically. the button is placed in the center of horizontal layout in design view, but when running the programme, It is placed in the bottom of horizontal layout.

Please see the attached screenshot designview_qtcreator1102.png ,runingview_qtcreator1102.png and layoutunconsistent.zip.

There is a workaground . Set the vertical stretch factor of the label to something other than 0. Set the stretch factor of the top-level vertical layout to "1,0"