If you’re finding the new Patch 10.1.5 UI actionbar animations distracting, you can disable them with the following addon.
Fractures in Time introduced a slew of UI updates. Action bars received flashy new animations that cannot be disabled without addons even though some users may find them distracting.
If you’re using third-party actionbar addons like Bartender, you won’t need this, but if you play with the stock UI, here is an addon that allows you to disable the new animations.