To enhance YouTube performance by modifying YouTube JS Engine
Thanks for reporting. The bug due to the last update has been fixed. Please check again.
If it solves, please update the review rating.
Thank you.
Ok, it's all good again and I've update the rating again.
Thank you for the fix!
Just like Canaan HS & Bec-de-Xorbin says, comments are disappearing after the latest update.