Yes, the left battery seems to have some more small voltage drift between its cells than the right one does. After balance charging them, both should be equal. Make sure you check after you have not only charged them but used them afterwards, if the cell drift appears again, and by how much.

Don't worry too much, If you follow some basic precautions, you'll be fine. Yes, these LiPo horror stories exist and bad things have happened with them. But compared to "all the stories", think how often thousands upon thousands of LiPos are charged around the world each moment, and you'll never hear anything, because nothing happened.