Rated 5 out of 5 stars

No longer functioning in Firefox 41.0.

Yes Aris, you are correct. The issue was with Cleanest Add-ons Manager. Changing the style for the add-on list to Classic instead of Adaptive fixes the problem. Thank you for pointing out the add-on causing the problem. Sorry - I should have checked this out. Everything was working fine in Firefox 40.0.3.

Keep up the great work on a valuable add-on.

This review is for a previous version of the add-on (1.0.3). 

Are you using any add-ons, that modify the add-ons manager or its appearance like "Cleanest Add-ons Manager" for example?

Try to disable them, restart and check again.

At least the issue with "Cleanest Add-ons Manager" will be fixed on next version.