The plugin the operates the front page does not necessarily work with the other hacks we use for various other pieces of functionality (like the quick account switch or the quick links drop down). It has to do with, for example, the declaration of global variables.
It's a problem that could be fixed, but would require new attention for each update of the plugin/forum software/other hacks, so is sort of not worth the trouble. If there's anything that impedes functionality, though, that can certainly be addressed.