Depends on the language. It has some bugs where it replaces some words with Unicode symbols like ©. And is completely oblivious to it even when pointed out.

did you face this in the aistudio ui by any chance? i have seen it there.

Ive seen it both in the Studio and via API, with various character replacements. It's weird, it's like its own dialect, the character usually corresponds to the word (or part od it) being replaced.