I actived this extensions months ago and it used to work, but it's been maybe 3 weeks since it no longer does, pretty much when [[T4703]] was fixed. I checked if I activated it in my preferences (I did), and I tried pressing tab and ctrl+space, to no avail.
I noticed something unusual, though: one time, while opening a page edit, the interface was taking longer than usual to load and I started typing before it showed up; I was surprised when I saw a link was auto-completing but then the interface finished loading and the auto-complete went off. Maybe a conflict?