Not only this but it also doesn't always list the other airspace in the same level. I haven't got my unit here but it sometimes you get a 'More' tag and can see airspace at other levels, other locations don't show this. I think this is in areas where Class A and CTA's overlap.
If you want to see a really bad implementation of showing Class A airways just have a look round the MAY VOR. A lot of Class A airways end there and rather than combine them they are all drawn individually