Thank you for your feedback ! But can you open a issue on GitHub to help me investigate ? because it is working on my browser and I will need indication to reproduce your bug. GitHub is more convenient to solve the issue because on Firefox on can only reply once and edit are not notified. If you do not have and want to create a GitHub account, you can send me an email describing the issue.
Link for new issue: https://github.com/Taknok/youtube-auto-like/issues/new/choose
