TextFormField textAlign center does not center hintText

[MichaelSowah]

I been trying everything to center the hintText of a TextFormField but not working, what am I doing wrong?
here's the code

  child: new TextFormField(
        textAlign: TextAlign.center,
        decoration: new InputDecoration(
          hintText: "Full name",
        ),
      ),

Is this supposed to center the hintText? if yes why is it not centering?
whats the supposed behaviour?

[zoechi]

Isn't this the same as #16769 ?

Dup of #16366, #15079 ?

[github-actions]

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