I'm using godot engine, and I found that the silver Font is not center aliged on Y Axis. I've tested on button and label widget. But, the default font works well. See bellow:

Hey, just ran into the same issue, the second to last comment here explains how to fix it: https://github.com/godotengine/godot-proposals/issues/10503
 I used a value of 0.125 and it looks ok.