Rhino drawing fonts differently after reinstall?

Ok, slightly odd one (maybe?)
I’ve been using a font in Rhino to add text to some items.

Last week I reinstalled my system, re-installed rhino, and reinstalled the exact same font, which I’d kept safely in my work folder.

Rhino is now drawing the shapes of each letter substantially differently.

Anyone happen to know if this is a setting that has been (un)checked at some point? I have no idea what would be causing it.

Example: (Drew an exact copy of the font in the same position as the old one)

Hi John,
It looks like the font may be set to bold now — the outlines in your screenshot are the same shape, just uniformly fatter. Can you check the Bold button state? What’s the font name?