(This problem happens on most chars. Even when I safe and restore on the same char.)
Also it looks like this addon isn't updated anymore?

What steps will reproduce the problem?
1. use bartender 4 and put icons on all bars. (Bar 1,2,5,6 should be filled with icons! As you can see on the Worgen protection warrior. The Tauren Protection Warrior shows a LOT of empty spaces and errors.!)
FYI, I also have made screendumps of both chars with unlocked the bars, so you can see the hidden bars and the bar-numbers. And you can see that the bars of the Tauren (horde) misses a LOT of icons compared to the Worgen (alliance).
(Both warriors have 100% the same protection build.)
2.
3.

What is the expected output? What do you see instead?

What version of the product are you using?
v2.3.3-1-gb9901cb (latest update according to Curse and Wowace

Do you have an error log of what happened?
See the added screendumps.

Please provide any additional information below.