Missing fonts on nested instances

I am having this issue/bug for when using an instance from a design library, whenever I am using component that has a text field with 2 different font sizes, then I try to edit or update the text info, it shows that the fonts are missing. This happens when I click and drag that component from the library that I am connected to.

Now, if I use the component directly from the library (copy and paste) it works just fine.

Can someone tell me what the issue could be?