Under the quick reply box on the left I have a "View Tag Cloud" and it took me to all the grouped topic headings (AOTH being one) and that took me to all AOTH related threads. It works the same as it used to but called a different name.
On the right hand side it has "Add/Edit Tags". Do you have that? If you do, you can add AOTH and create a Tag Cloud.
I don't know if any of that is of help to you - but I just keep trying stuff and see what works.