Considering that the aoe lines which they just added are still around the player & not your target (where the alac aoe is now originating from), & that the aoe alac+might around the target works regardless of range as long as you have a target, I think it's safe to say this is a bug. I of course could be wrong, but I think this is an unintended consequence of how they redid the AoE to get it to have an outline around you (it's working like a druid CA skill with might kinda)