Theme update causes fonts to change, even when using export settings.

Hi there, i know this is a newb question, but i need to update my theme but it causes the fonts to all change.

So i downloaded the official child theme and installed.

I’ve used the import from parent option, and exported and imported the settings manually, but it does work, once the parent theme is updated, all my fonts turn to an ugly random font

I also looked into the stylesheet and there is nothing there for me to copy over.

Am i missing something or is this how it is?