Fonts display correctly - but don't appear in font menu

[Tightenic]

I'm having an issue where another artist will send me an Ai file. The fonts will display correctly - but don't appear in font menu. Any ideas on how to fix this? I use Overlord to send assets to Ae a lot, and this is causing a big problem in my workflow.

[Monika Gause]

Do you have those fonts installed in your system?

[Tightenic]

Hi there, yes I do. Sometimes the fonts appear twice though? One in brackets, one not. May be a clue?

[Monika Gause]

Are they Adobe Fonts?

Do you use font management?

Is this Mac or Windows?

[Ton Frederiks]

Maybe this feature? Fonts Preview correctly even when they are missing. Outline seems to help. 

https://helpx.adobe.com/illustrator/using/find-missing-fonts.html

[Tightenic]

This dialogue box doesn't appear, Illustrator seems quite happy with the fonts. It just won't display the name of the font in the character window.