For whatever reason the addons are now all stuck to the left.
I have followed these directions, namely to change the theme and the rest of them but it didn't help. https://support.mozilla.org/ff/questions/929632
When I right click on the add-ons toolbar I get the same stripes the poster is talking about and it's related to NoSquint.
This started with 13.0.1.
Any ideas how to get the addon buttons back to the left of the browser?