Same small problem Rated 5 out of 5 stars
As reported in a May 22 post, I also experience the two buttons and status bar appearing even though no downloads had been active. Their appearance can be deleted by unchecking, then rechecking the hide button checkboxes, but the problem returns at random, often after a restart or installation of a new addon. Seems to be related to Firefox update to v.29 (Mac OS 10.6.8). For whatever reason, it seems that the addon prefs file can't always "hold onto" the checked hide buttons setting.This review is for a previous version of the add-on (126.96.36.199-signed). This user has 3 previous reviews of this add-on.
I figured out another add-on is causing this problem. I reported the bug to the add-on developer but meanwhile I coded some fallback mechanism which can take action in such kind of unexpected situation. Could you install v9.3.3 and feedback please? After you install v9.9.3, "Restart" is "required" to clean up old UI details.