This forum is vast, I hope I'm in the right zone?
My issue is with the opening of the add-ons page of Firefox. Whenever I open the page it opens in the current tab that I'm busy surfing.
With other words I read something interesting about another add-on and want to check my installed add-ons but there goes my opened site.
Plan B is to first open a new blank tab page and then select the add-ons option or button.
Is there any way around it so that the add-ons page opens directly in a new tab?

Regards

Ignore question, my own mistake.
I used the add-on "about_addons Button 2.0.1" and should have used the codefischer version named "Add-ons Button"
Working 100%