We have the fix available in the latest release. Please update Illustrator using Adobe Creative Cloud application to the latest build for version Illustrator CC 22.1.
Please refer to our knowledge base FAQ – https://illustrator.uservoice.com/knowledgebase/articles/1844590 if you face difficulty in update.
Or get in touch with us at any of the other support channels – https://helpx.adobe.com/support.html
Ashutosh Chaturvedi | Sr. Quality Engineering Manager – Illustrator
Adobe. Make It an Experience.K commented
My autofill is gone for my fonts. It also will add a random letter or two when I try to type a font name. This is awful. We are paying subscription rates and losing necessary services. This is making my job a lot harder, since I can no longer type in partials to access my fonts. Or even the whole font name. The functionality has just disappeared.