Guild Wars 2

After I made Ad Infinitum, I found there is only 1 infusion slot and 1 upgrade slot.
But I wonder why 1 infusion slot rather than 2?
Is that a bug?

edit:typo problem, actually I mean 1 infusion slot+ 1 agony infusion slot

Both backs are infused, so one infusion slot and one agony infusion slot. Like any legendary, I expect it to have identical stats to max Ascended, which it does.

Only Rings can be attuned to provide to an additional agony infusion slot

Illconceived Was Na.9781:

Both backs are infused, so one infusion slot and one agony infusion slot. Like any legendary, I expect it to have identical stats to max Ascended, which it does.

Alright,I tested. It seems graphic issue,so Ad Infinitum actually can work with two infusions.