Affected versions
This article applies to Illustrator 29.7.1
Issue
Adobe has identified an issue with fonts added to the OS while Illustrator is open and running. This effects any version of Connect performing activation in this version of illustrator and later.
Recommendation
Adobe has recommended users roll back to a version previous to 29.7.1 for the time being while they address this issue
Further information can be found here in an Adobe Community Post