I received several comments in regards to the Changes to “Holding” the back button in Fx 29 post from here as well as comments on mozillaZine Firefox Builds. All were the same theme, “Still works for me. Could be an add-on”. So, I went through and started disabling add-ons. Thing was this profile was fairly lean when it came to add-on, just had AdBlock Plus, Classic Theme Restorer, CoLT, Flagfox and Greasemonkey. Turns out, it was indeed an add-on giving me the troubles. The Classic Theme Restorer, more specifically in the options if you choose “Movable back-forward button” then the…