Mona Sans use in Adobe illustrator issue

[mimitsen]

When I use the font(both otf and ttf) in illustrator CC there were no problem, but when l saved the file in older version(CS6), the text will automatically outline itself~ I had try on multiple computer, please help~

[JolinM]

There's also an issue of copy/pasting text. In CC2023 (27.4.1), the text will outline itself when copy/pasting in the same doc or between documents.