Blade blast of dagger detonation totems function in an unexpected manner

I’ve been playing around with blade blast of dagger detonation, and a friend suggested I see how it works with totems. I linked it to spell totem, and instead of casting around the totem, as I would expect, it can target far away enemies, as if I had an Astral Projector equipped. Is this intentional?

If it’s helpful, the character I’m using is TrashToFreysure, in one of the current templated private leagues.