Labels of comboboxes should be aligned vertically and not only horizontally

If you add a combobox into a canvas sheet and choose to enable the lable in front of the combobox and additional choose the thickness of the border of the combobox, the label ísn't alligned anymore to the combobox.
If you want to align the label you can only align it horizontally and not vertically.
Please add the vertical alignement.

(see attached screenshot)