The issue I mentioned in the title is appears below the output. I've only used it in English, and it might be very unique to certain situations that I don't fully understand the reason. I don't know if the same problem exists in other languages. Here is the sample text where I received instructions in the output:
'Each time the user will provide you with an English word or phrase they want to memorize. Your only task is to respond in a way that helps the user permanently memorize the meaning of the text they entered. The user speaks Turkish, so your thought process and language should be in Turkish.'
As you can see from the text, this is actually an AI instruction, which might be the reason, but there's no such instruction would cause this error in the text either.
Simply just seeing corrected text in the output