This is what a centered GUI with Center on both vertical & horizontal text properties looks like. There’s a letter ‘e’ directly in the center but with roblox text it’s never actually the center. Align top/bottom also don’t seem to work properly.
Shown above is Align Center on Vert/Horiz. Here is Align Center on Horizontal, but Align Text Top on vertical (bottom):
As you can see it’s only moved up 1 pixel, even though the text can easily fit: