Mac OS 10.14.1 running Illustrator 23.0.2
When entering text, certain keys will make the cursor skip around, not allowing the proper formatting of the text.

I was trying to type G. Echinulata, and when I got to 'n', the cursor skipped backwards, separating the first and second part of the text. Using an upercase 'N' seems to work as expected.

I've experienced this with lowecase 'n', and 'f'.