I don't know what happens. I've installed the necessary Aiss images and it looks like your screenshot in my AKReal setup, AmigaSystem. But I've installed TheBar and the Aiss pack in CWB39 and it looks different.
There must be an option to have only that bar I'm showing. But where?
Edit: Ah, ok. You control that with the "View" preference.
It's a wonderful program.