Hello,
Please send me me more info to my support email. Mostly the exact steps to reproduce the issue.
It should work fine, if you are not using the popup checkbox to disable it on current domain but instead you edit it directly in the Options page, make sure to use correct domain name, for example: "facebook.com", don't include "www" or "https".
Best regards,
Juraj Mäsiar

Hello,
Could you send me more info on my support email?
Mostly what Firefox version, addon version and what input device did you used (mouse I suppose?).
Thanks for reporting bugs!

Best regards,
Juraj Mäsiar