I have been unable to reproduce this problem, any additional information you can share is greatly appreciated: Does it happen on all websites or some? Which firefox version and operative system are you using?

Your previous review was for version 1.1, can I assume you did not experience this problem with that version? Can you try one of the older versions of this add-on and see if the problem disappears? To do this, press "See all versions" on the add-on page (note that this will reset settings you've changed for this add-on).