Thank you for your feedback. Could you please provide some more information for example operating system, installed add-ons and an example website where the blocker fails. Maybe you could also try with a clean profile.
You can contact me at joofthan1@gmail.com
This would be really helpful.

Edit:
Thanks for your e-mail with detailed information. I developped version 1.1.2 which now is also able to block the tab popups you mentioned.