In most places, it seems to accept 'de Ælfweald' ok, but on the bar at the top, it says "Home | Products | Face recognition | Genealogy | Community | Research | About | de lfwea..." -- not only cutting it off, but missing the AE-ligature
Specifically, it appears that it is just converting it to ascii (removing the AE-ligature) and then capitalizing the first letter (changing 'l' to 'L').