What does the "automatically adjusts font requires using a dynamic type text style" warning mean?

1. Open your storyboard as Source Code
2. Search for key "adjustsFontForContentSizeCategory"
3. Check which object has this option and uncheck Dynamic Type checkbox from interface builder.

I just changed Text style to Body & Warning vanishes.

It's Just because it is dynamic type textStyle

See list of predefined supported dynamic type textStyle -

I had the same problem. Even after I opened the storyboard as source and removed the "adjustsFontForContentSizeCategory" key, saved and cleaned the project it would still show.

So then I:

1. Cleaned the project
2. Closed Xcode
3. Deleted the derived data folder contents
4. Re-Opened Xcode and rebuilt

It was gone. :)