>>No, on the contrary. With Autosize on, the label will always be left adjusted.
>
>But she is not setting the width of the label to span the whole width of the page, which is what would make the alignment center work. Width autosize on, alignment property has no effect, as the size of the text will use the whole width of the label, that is why she moves the label to the center of the page.

If we re-size the form, design centering of the label may not work, right? Of we can achieve it with Anchor settings?

In any case, it seems to work now.