I don't know which you're referring to, but jumping to the end of the thread won't be fixed. It was a design choice from the core Xoops team based on thousands of requests from users, so you might as well get used to it. Once you get used to it, you'll find it a LOT more useful than going to the top of a large thread every time and trying to figure out which page you last read.
I have put in my obligatory request that it be made a user (or at least Admin) option.
Wayne