silence on this matter has been golden.
Considering our future is electronic sharing and ePub is a standard that is not good.
That these things (epubs with links) tend to work with commercial offerings but don't seem to work with default APPLE software such as iBooks is a statement about APPLE.
Why would anyone trust or believe a company that gives you something that only half works. If others can make their software work, with the links, why not APPLE?
Fact is I work with iBooks and it is too hard to change stuff at the moment. I will in time.
In the meantime i have a workaround that will work but is restricted. The books I want to read are available in both ePub and in Mobi. I now download the books in mobi. I then use Calibre to convert it to an ePub. I then open the converted book with iBooks and the links work fine. So if Calibre can handle the process of conversion, error correction or whatever, why cant Apple / iBooks. Calibre is FREE. Certainly a better class of free that Apple iBooks software in my opinion.
the restriction of course is you need to download first in Mobi. I tried downloading epubs and using calibre to convert them in to other epubs but no joy, perhaps i was doing something wrong. anyway i have something that works for me.
won't be saying anything nice about apple or apple software to anyone. no recommendations will be found here.