It's a minor thing but for example blizzard action bar 2 is bartender bar 6 and blizzard bar 3 is bartender bar 5. What I mean is that if you put the spells on blizzard's action bars they will show up on different bartender action bars. I usually keep the same layout between addons and blizz UI, in the case something breaks with the addon and I have to disable it until fixed.

Bartender has been using numbered bars for over a decade, when Blizzard still named them arbitrary names like "bottom left" and "bottom right". Unfortunately when Blizzard change the names to have numbers, they of course didn't use the same numbers.

I'm not going to rename the Bartender bars, because that would just be confusing to long-time users. But maybe I can put a note somewhere how they align.

Ok makes sense.

Actually I have been thinking about how to convey this, and 10.0/DF might be a good time to break with tradition and just use their names. I had already done some steps towards that by renaming the old 7-10 to Class Bars 1-4

So in the future Bars 1-8 should match Blizzards Bars, with Bartender offering an additional Bonus Bar (Previously known as Bar 2), and the Class Bars 1-4