It should appear centered on a desktop or laptop etc - though on some mobiles (and likely some tablets) the signatures may well appear like it does for yhwx.
Still, it seems to do the job - despite appearing a little ‘off’ on some mobiles.
Please remember these moderator signatures are likely a short-term measure to help posters be able to tell the difference between moderators and members to help avoid ‘confusion’.
Ta, muchly 😃