Weird problem with Dominos toolbars replicating other toolbars. I've tried using shift+mousewheel and can verify that action bar 1 is indeed action bar 1. If you look, you'll see that other bars
Dominos | WoW Addons - DKPminus
Stacked Action Bars?
Best Action Bar Addon in WoW || Bartender vs. Dominos vs. ElvUI [video]